Home / 39,540.61-54,509.28-28,190.42

Finding the Fourth Proportional to 39,540.61, 54,509.28 and 28,190.42

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Solution

The fourth proportional to 39,540.61, 54,509.28 and 28,190.42 is: 38,862.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,540.61 : 54,509.28 = 28,190.42 : x
  2. Step 2: Convert to fraction form
    39,540.61/54,509.28 = 28,190.42/x
  3. Step 3: Cross multiply
    39,540.61x = 54,509.28 × 28,190.42
  4. Step 4: Simplify right side
    39,540.61x = 1,536,639,497.10
  5. Step 5: Solve for x
    x = 1,536,639,497.10/39,540.61
  6. Step 6: Final answer
    x = 38,862.31

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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.