Home / 21,282.60-31,938.30-9,589.80

Finding the Fourth Proportional to 21,282.60, 31,938.30 and 9,589.80

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Solution

The fourth proportional to 21,282.60, 31,938.30 and 9,589.80 is: 14,391.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.60 : 31,938.30 = 9,589.80 : x
  2. Step 2: Convert to fraction form
    21,282.60/31,938.30 = 9,589.80/x
  3. Step 3: Cross multiply
    21,282.60x = 31,938.30 × 9,589.80
  4. Step 4: Simplify right side
    21,282.60x = 306,281,909.34
  5. Step 5: Solve for x
    x = 306,281,909.34/21,282.60
  6. Step 6: Final answer
    x = 14,391.19

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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.