Home / 25,418,748.70-38,128,123.05-17,765,998.30

Finding the Fourth Proportional to 25,418,748.70, 38,128,123.05 and 17,765,998.30

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Solution

The fourth proportional to 25,418,748.70, 38,128,123.05 and 17,765,998.30 is: 26,648,997.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,418,748.70 : 38,128,123.05 = 17,765,998.30 : x
  2. Step 2: Convert to fraction form
    25,418,748.70/38,128,123.05 = 17,765,998.30/x
  3. Step 3: Cross multiply
    25,418,748.70x = 38,128,123.05 × 17,765,998.30
  4. Step 4: Simplify right side
    25,418,748.70x = 677,384,169,288,490.75
  5. Step 5: Solve for x
    x = 677,384,169,288,490.75/25,418,748.70
  6. Step 6: Final answer
    x = 26,648,997.45

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Double scale
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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.