Home / 28,149.74-42,209.01-11,521.43

Finding the Fourth Proportional to 28,149.74, 42,209.01 and 11,521.43

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Solution

The fourth proportional to 28,149.74, 42,209.01 and 11,521.43 is: 17,275.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.74 : 42,209.01 = 11,521.43 : x
  2. Step 2: Convert to fraction form
    28,149.74/42,209.01 = 11,521.43/x
  3. Step 3: Cross multiply
    28,149.74x = 42,209.01 × 11,521.43
  4. Step 4: Simplify right side
    28,149.74x = 486,308,154.08
  5. Step 5: Solve for x
    x = 486,308,154.08/28,149.74
  6. Step 6: Final answer
    x = 17,275.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.