Home / 28,132.68-38,818.52-15,555

Finding the Fourth Proportional to 28,132.68, 38,818.52 and 15,555

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Solution

The fourth proportional to 28,132.68, 38,818.52 and 15,555 is: 21,463.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.68 : 38,818.52 = 15,555 : x
  2. Step 2: Convert to fraction form
    28,132.68/38,818.52 = 15,555/x
  3. Step 3: Cross multiply
    28,132.68x = 38,818.52 × 15,555
  4. Step 4: Simplify right side
    28,132.68x = 603,822,078.60
  5. Step 5: Solve for x
    x = 603,822,078.60/28,132.68
  6. Step 6: Final answer
    x = 21,463.37

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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.