Home / 12,520.89-17,278-7,487.37

Finding the Fourth Proportional to 12,520.89, 17,278 and 7,487.37

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Solution

The fourth proportional to 12,520.89, 17,278 and 7,487.37 is: 10,332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.89 : 17,278 = 7,487.37 : x
  2. Step 2: Convert to fraction form
    12,520.89/17,278 = 7,487.37/x
  3. Step 3: Cross multiply
    12,520.89x = 17,278 × 7,487.37
  4. Step 4: Simplify right side
    12,520.89x = 129,366,778.86
  5. Step 5: Solve for x
    x = 129,366,778.86/12,520.89
  6. Step 6: Final answer
    x = 10,332.08

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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.