Home / 20,031.04-27,641.70-11,078.02

Finding the Fourth Proportional to 20,031.04, 27,641.70 and 11,078.02

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Solution

The fourth proportional to 20,031.04, 27,641.70 and 11,078.02 is: 15,287.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.04 : 27,641.70 = 11,078.02 : x
  2. Step 2: Convert to fraction form
    20,031.04/27,641.70 = 11,078.02/x
  3. Step 3: Cross multiply
    20,031.04x = 27,641.70 × 11,078.02
  4. Step 4: Simplify right side
    20,031.04x = 306,215,305.43
  5. Step 5: Solve for x
    x = 306,215,305.43/20,031.04
  6. Step 6: Final answer
    x = 15,287.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.