Home / 15,394.01-21,240.70-9,106.79

Finding the Fourth Proportional to 15,394.01, 21,240.70 and 9,106.79

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Solution

The fourth proportional to 15,394.01, 21,240.70 and 9,106.79 is: 12,565.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,394.01 : 21,240.70 = 9,106.79 : x
  2. Step 2: Convert to fraction form
    15,394.01/21,240.70 = 9,106.79/x
  3. Step 3: Cross multiply
    15,394.01x = 21,240.70 × 9,106.79
  4. Step 4: Simplify right side
    15,394.01x = 193,434,465.38
  5. Step 5: Solve for x
    x = 193,434,465.38/15,394.01
  6. Step 6: Final answer
    x = 12,565.57

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.