Home / 12,691.20-19,036.09-4,371.02

Finding the Fourth Proportional to 12,691.20, 19,036.09 and 4,371.02

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Solution

The fourth proportional to 12,691.20, 19,036.09 and 4,371.02 is: 6,556.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.20 : 19,036.09 = 4,371.02 : x
  2. Step 2: Convert to fraction form
    12,691.20/19,036.09 = 4,371.02/x
  3. Step 3: Cross multiply
    12,691.20x = 19,036.09 × 4,371.02
  4. Step 4: Simplify right side
    12,691.20x = 83,207,130.11
  5. Step 5: Solve for x
    x = 83,207,130.11/12,691.20
  6. Step 6: Final answer
    x = 6,556.29

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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.