Home / 20,776.23-31,126.71-9,540.96

Finding the Fourth Proportional to 20,776.23, 31,126.71 and 9,540.96

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Solution

The fourth proportional to 20,776.23, 31,126.71 and 9,540.96 is: 14,294.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.23 : 31,126.71 = 9,540.96 : x
  2. Step 2: Convert to fraction form
    20,776.23/31,126.71 = 9,540.96/x
  3. Step 3: Cross multiply
    20,776.23x = 31,126.71 × 9,540.96
  4. Step 4: Simplify right side
    20,776.23x = 296,978,695.04
  5. Step 5: Solve for x
    x = 296,978,695.04/20,776.23
  6. Step 6: Final answer
    x = 14,294.16

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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.