Home / 39,028.28-53,859.03-21,123.29

Finding the Fourth Proportional to 39,028.28, 53,859.03 and 21,123.29

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Solution

The fourth proportional to 39,028.28, 53,859.03 and 21,123.29 is: 29,150.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,028.28 : 53,859.03 = 21,123.29 : x
  2. Step 2: Convert to fraction form
    39,028.28/53,859.03 = 21,123.29/x
  3. Step 3: Cross multiply
    39,028.28x = 53,859.03 × 21,123.29
  4. Step 4: Simplify right side
    39,028.28x = 1,137,679,534.90
  5. Step 5: Solve for x
    x = 1,137,679,534.90/39,028.28
  6. Step 6: Final answer
    x = 29,150.13

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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.