Home / 10,431,326.40-15,646,989.60-7,911,902.40

Finding the Fourth Proportional to 10,431,326.40, 15,646,989.60 and 7,911,902.40

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Solution

The fourth proportional to 10,431,326.40, 15,646,989.60 and 7,911,902.40 is: 11,867,853.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431,326.40 : 15,646,989.60 = 7,911,902.40 : x
  2. Step 2: Convert to fraction form
    10,431,326.40/15,646,989.60 = 7,911,902.40/x
  3. Step 3: Cross multiply
    10,431,326.40x = 15,646,989.60 × 7,911,902.40
  4. Step 4: Simplify right side
    10,431,326.40x = 123,797,454,569,015.05
  5. Step 5: Solve for x
    x = 123,797,454,569,015.05/10,431,326.40
  6. Step 6: Final answer
    x = 11,867,853.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.