Home / 39,237.32-54,148.20-21,332.72

Finding the Fourth Proportional to 39,237.32, 54,148.20 and 21,332.72

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Solution

The fourth proportional to 39,237.32, 54,148.20 and 21,332.72 is: 29,439.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,237.32 : 54,148.20 = 21,332.72 : x
  2. Step 2: Convert to fraction form
    39,237.32/54,148.20 = 21,332.72/x
  3. Step 3: Cross multiply
    39,237.32x = 54,148.20 × 21,332.72
  4. Step 4: Simplify right side
    39,237.32x = 1,155,128,389.10
  5. Step 5: Solve for x
    x = 1,155,128,389.10/39,237.32
  6. Step 6: Final answer
    x = 29,439.53

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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.