Home / 28,454.27-39,269.07-15,709.91

Finding the Fourth Proportional to 28,454.27, 39,269.07 and 15,709.91

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Solution

The fourth proportional to 28,454.27, 39,269.07 and 15,709.91 is: 21,680.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.27 : 39,269.07 = 15,709.91 : x
  2. Step 2: Convert to fraction form
    28,454.27/39,269.07 = 15,709.91/x
  3. Step 3: Cross multiply
    28,454.27x = 39,269.07 × 15,709.91
  4. Step 4: Simplify right side
    28,454.27x = 616,913,555.48
  5. Step 5: Solve for x
    x = 616,913,555.48/28,454.27
  6. Step 6: Final answer
    x = 21,680.88

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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.