Home / 11,385.68-15,708.72-6,669.92

Finding the Fourth Proportional to 11,385.68, 15,708.72 and 6,669.92

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Solution

The fourth proportional to 11,385.68, 15,708.72 and 6,669.92 is: 9,202.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.68 : 15,708.72 = 6,669.92 : x
  2. Step 2: Convert to fraction form
    11,385.68/15,708.72 = 6,669.92/x
  3. Step 3: Cross multiply
    11,385.68x = 15,708.72 × 6,669.92
  4. Step 4: Simplify right side
    11,385.68x = 104,775,905.70
  5. Step 5: Solve for x
    x = 104,775,905.70/11,385.68
  6. Step 6: Final answer
    x = 9,202.43

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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.