Home / 12,691.08-17,513.28-7,025.63

Finding the Fourth Proportional to 12,691.08, 17,513.28 and 7,025.63

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Solution

The fourth proportional to 12,691.08, 17,513.28 and 7,025.63 is: 9,695.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.08 : 17,513.28 = 7,025.63 : x
  2. Step 2: Convert to fraction form
    12,691.08/17,513.28 = 7,025.63/x
  3. Step 3: Cross multiply
    12,691.08x = 17,513.28 × 7,025.63
  4. Step 4: Simplify right side
    12,691.08x = 123,041,737.80
  5. Step 5: Solve for x
    x = 123,041,737.80/12,691.08
  6. Step 6: Final answer
    x = 9,695.14

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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.