Home / 26,398.16-36,428.38-15,781.52

Finding the Fourth Proportional to 26,398.16, 36,428.38 and 15,781.52

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Solution

The fourth proportional to 26,398.16, 36,428.38 and 15,781.52 is: 21,777.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,398.16 : 36,428.38 = 15,781.52 : x
  2. Step 2: Convert to fraction form
    26,398.16/36,428.38 = 15,781.52/x
  3. Step 3: Cross multiply
    26,398.16x = 36,428.38 × 15,781.52
  4. Step 4: Simplify right side
    26,398.16x = 574,895,207.54
  5. Step 5: Solve for x
    x = 574,895,207.54/26,398.16
  6. Step 6: Final answer
    x = 21,777.85

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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.