Home / 20,718.75-31,090.92-9,032.88

Finding the Fourth Proportional to 20,718.75, 31,090.92 and 9,032.88

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Solution

The fourth proportional to 20,718.75, 31,090.92 and 9,032.88 is: 13,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.75 : 31,090.92 = 9,032.88 : x
  2. Step 2: Convert to fraction form
    20,718.75/31,090.92 = 9,032.88/x
  3. Step 3: Cross multiply
    20,718.75x = 31,090.92 × 9,032.88
  4. Step 4: Simplify right side
    20,718.75x = 280,840,549.45
  5. Step 5: Solve for x
    x = 280,840,549.45/20,718.75
  6. Step 6: Final answer
    x = 13,554.90

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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.