Home / 20,727.90-31,102.65-9,042.30

Finding the Fourth Proportional to 20,727.90, 31,102.65 and 9,042.30

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Solution

The fourth proportional to 20,727.90, 31,102.65 and 9,042.30 is: 13,568.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.90 : 31,102.65 = 9,042.30 : x
  2. Step 2: Convert to fraction form
    20,727.90/31,102.65 = 9,042.30/x
  3. Step 3: Cross multiply
    20,727.90x = 31,102.65 × 9,042.30
  4. Step 4: Simplify right side
    20,727.90x = 281,239,492.10
  5. Step 5: Solve for x
    x = 281,239,492.10/20,727.90
  6. Step 6: Final answer
    x = 13,568.16

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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.