Home / 11,385.40-15,710.11-6,349.68

Finding the Fourth Proportional to 11,385.40, 15,710.11 and 6,349.68

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Solution

The fourth proportional to 11,385.40, 15,710.11 and 6,349.68 is: 8,761.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.40 : 15,710.11 = 6,349.68 : x
  2. Step 2: Convert to fraction form
    11,385.40/15,710.11 = 6,349.68/x
  3. Step 3: Cross multiply
    11,385.40x = 15,710.11 × 6,349.68
  4. Step 4: Simplify right side
    11,385.40x = 99,754,171.26
  5. Step 5: Solve for x
    x = 99,754,171.26/11,385.40
  6. Step 6: Final answer
    x = 8,761.59

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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.