Home / 12,864.87-17,757.90-7,561.26

Finding the Fourth Proportional to 12,864.87, 17,757.90 and 7,561.26

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Solution

The fourth proportional to 12,864.87, 17,757.90 and 7,561.26 is: 10,437.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.87 : 17,757.90 = 7,561.26 : x
  2. Step 2: Convert to fraction form
    12,864.87/17,757.90 = 7,561.26/x
  3. Step 3: Cross multiply
    12,864.87x = 17,757.90 × 7,561.26
  4. Step 4: Simplify right side
    12,864.87x = 134,272,098.95
  5. Step 5: Solve for x
    x = 134,272,098.95/12,864.87
  6. Step 6: Final answer
    x = 10,437.11

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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.