Home / 11,385.31-15,710.34-6,349.81

Finding the Fourth Proportional to 11,385.31, 15,710.34 and 6,349.81

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Solution

The fourth proportional to 11,385.31, 15,710.34 and 6,349.81 is: 8,761.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.31 : 15,710.34 = 6,349.81 : x
  2. Step 2: Convert to fraction form
    11,385.31/15,710.34 = 6,349.81/x
  3. Step 3: Cross multiply
    11,385.31x = 15,710.34 × 6,349.81
  4. Step 4: Simplify right side
    11,385.31x = 99,757,674.04
  5. Step 5: Solve for x
    x = 99,757,674.04/11,385.31
  6. Step 6: Final answer
    x = 8,761.96

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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.