Home / 39,190.19-54,082.85-21,285.55

Finding the Fourth Proportional to 39,190.19, 54,082.85 and 21,285.55

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Solution

The fourth proportional to 39,190.19, 54,082.85 and 21,285.55 is: 29,374.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,190.19 : 54,082.85 = 21,285.55 : x
  2. Step 2: Convert to fraction form
    39,190.19/54,082.85 = 21,285.55/x
  3. Step 3: Cross multiply
    39,190.19x = 54,082.85 × 21,285.55
  4. Step 4: Simplify right side
    39,190.19x = 1,151,182,990.62
  5. Step 5: Solve for x
    x = 1,151,182,990.62/39,190.19
  6. Step 6: Final answer
    x = 29,374.26

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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.