Home / 39,028.28-53,859.02-21,123.42

Finding the Fourth Proportional to 39,028.28, 53,859.02 and 21,123.42

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Solution

The fourth proportional to 39,028.28, 53,859.02 and 21,123.42 is: 29,150.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,028.28 : 53,859.02 = 21,123.42 : x
  2. Step 2: Convert to fraction form
    39,028.28/53,859.02 = 21,123.42/x
  3. Step 3: Cross multiply
    39,028.28x = 53,859.02 × 21,123.42
  4. Step 4: Simplify right side
    39,028.28x = 1,137,686,700.25
  5. Step 5: Solve for x
    x = 1,137,686,700.25/39,028.28
  6. Step 6: Final answer
    x = 29,150.32

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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.