Home / 12,380.61-17,085.09-6,715.25

Finding the Fourth Proportional to 12,380.61, 17,085.09 and 6,715.25

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Solution

The fourth proportional to 12,380.61, 17,085.09 and 6,715.25 is: 9,266.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,380.61 : 17,085.09 = 6,715.25 : x
  2. Step 2: Convert to fraction form
    12,380.61/17,085.09 = 6,715.25/x
  3. Step 3: Cross multiply
    12,380.61x = 17,085.09 × 6,715.25
  4. Step 4: Simplify right side
    12,380.61x = 114,730,654.45
  5. Step 5: Solve for x
    x = 114,730,654.45/12,380.61
  6. Step 6: Final answer
    x = 9,266.96

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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.