Home / 14,387.40-21,605.40-9,478.80

Finding the Fourth Proportional to 14,387.40, 21,605.40 and 9,478.80

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Solution

The fourth proportional to 14,387.40, 21,605.40 and 9,478.80 is: 14,234.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,387.40 : 21,605.40 = 9,478.80 : x
  2. Step 2: Convert to fraction form
    14,387.40/21,605.40 = 9,478.80/x
  3. Step 3: Cross multiply
    14,387.40x = 21,605.40 × 9,478.80
  4. Step 4: Simplify right side
    14,387.40x = 204,793,265.52
  5. Step 5: Solve for x
    x = 204,793,265.52/14,387.40
  6. Step 6: Final answer
    x = 14,234.21

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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.