Home / 17,387.90-26,078.36-11,129.00

Finding the Fourth Proportional to 17,387.90, 26,078.36 and 11,129.00

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Solution

The fourth proportional to 17,387.90, 26,078.36 and 11,129.00 is: 16,691.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,387.90 : 26,078.36 = 11,129.00 : x
  2. Step 2: Convert to fraction form
    17,387.90/26,078.36 = 11,129.00/x
  3. Step 3: Cross multiply
    17,387.90x = 26,078.36 × 11,129.00
  4. Step 4: Simplify right side
    17,387.90x = 290,225,882.40
  5. Step 5: Solve for x
    x = 290,225,882.40/17,387.90
  6. Step 6: Final answer
    x = 16,691.26

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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.