Home / 39,155.28-54,034.31-21,250.28

Finding the Fourth Proportional to 39,155.28, 54,034.31 and 21,250.28

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Solution

The fourth proportional to 39,155.28, 54,034.31 and 21,250.28 is: 29,325.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,155.28 : 54,034.31 = 21,250.28 : x
  2. Step 2: Convert to fraction form
    39,155.28/54,034.31 = 21,250.28/x
  3. Step 3: Cross multiply
    39,155.28x = 54,034.31 × 21,250.28
  4. Step 4: Simplify right side
    39,155.28x = 1,148,244,217.11
  5. Step 5: Solve for x
    x = 1,148,244,217.11/39,155.28
  6. Step 6: Final answer
    x = 29,325.40

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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.