Home / 18,710.20-28,045.22-9,331.69

Finding the Fourth Proportional to 18,710.20, 28,045.22 and 9,331.69

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Solution

The fourth proportional to 18,710.20, 28,045.22 and 9,331.69 is: 13,987.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.20 : 28,045.22 = 9,331.69 : x
  2. Step 2: Convert to fraction form
    18,710.20/28,045.22 = 9,331.69/x
  3. Step 3: Cross multiply
    18,710.20x = 28,045.22 × 9,331.69
  4. Step 4: Simplify right side
    18,710.20x = 261,709,287.42
  5. Step 5: Solve for x
    x = 261,709,287.42/18,710.20
  6. Step 6: Final answer
    x = 13,987.52

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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.