Home / 12,478,601.40-18,717,902.10-12,289,644.60

Finding the Fourth Proportional to 12,478,601.40, 18,717,902.10 and 12,289,644.60

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Solution

The fourth proportional to 12,478,601.40, 18,717,902.10 and 12,289,644.60 is: 18,434,466.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,601.40 : 18,717,902.10 = 12,289,644.60 : x
  2. Step 2: Convert to fraction form
    12,478,601.40/18,717,902.10 = 12,289,644.60/x
  3. Step 3: Cross multiply
    12,478,601.40x = 18,717,902.10 × 12,289,644.60
  4. Step 4: Simplify right side
    12,478,601.40x = 230,036,364,466,593.66
  5. Step 5: Solve for x
    x = 230,036,364,466,593.66/12,478,601.40
  6. Step 6: Final answer
    x = 18,434,466.90

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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.