Home / 12,385.12-17,084.40-7,666.24

Finding the Fourth Proportional to 12,385.12, 17,084.40 and 7,666.24

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Solution

The fourth proportional to 12,385.12, 17,084.40 and 7,666.24 is: 10,575.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.12 : 17,084.40 = 7,666.24 : x
  2. Step 2: Convert to fraction form
    12,385.12/17,084.40 = 7,666.24/x
  3. Step 3: Cross multiply
    12,385.12x = 17,084.40 × 7,666.24
  4. Step 4: Simplify right side
    12,385.12x = 130,973,110.66
  5. Step 5: Solve for x
    x = 130,973,110.66/12,385.12
  6. Step 6: Final answer
    x = 10,575.04

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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.