Home / 26,399.70-36,428.13-15,785.46

Finding the Fourth Proportional to 26,399.70, 36,428.13 and 15,785.46

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Solution

The fourth proportional to 26,399.70, 36,428.13 and 15,785.46 is: 21,781.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,399.70 : 36,428.13 = 15,785.46 : x
  2. Step 2: Convert to fraction form
    26,399.70/36,428.13 = 15,785.46/x
  3. Step 3: Cross multiply
    26,399.70x = 36,428.13 × 15,785.46
  4. Step 4: Simplify right side
    26,399.70x = 575,034,788.99
  5. Step 5: Solve for x
    x = 575,034,788.99/26,399.70
  6. Step 6: Final answer
    x = 21,781.87

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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.