Home / 28,947.20-39,946.92-16,372.40

Finding the Fourth Proportional to 28,947.20, 39,946.92 and 16,372.40

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Solution

The fourth proportional to 28,947.20, 39,946.92 and 16,372.40 is: 22,593.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947.20 : 39,946.92 = 16,372.40 : x
  2. Step 2: Convert to fraction form
    28,947.20/39,946.92 = 16,372.40/x
  3. Step 3: Cross multiply
    28,947.20x = 39,946.92 × 16,372.40
  4. Step 4: Simplify right side
    28,947.20x = 654,026,953.01
  5. Step 5: Solve for x
    x = 654,026,953.01/28,947.20
  6. Step 6: Final answer
    x = 22,593.79

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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.