Home / 11,188.47-15,438.89-6,471.87

Finding the Fourth Proportional to 11,188.47, 15,438.89 and 6,471.87

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Solution

The fourth proportional to 11,188.47, 15,438.89 and 6,471.87 is: 8,930.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,188.47 : 15,438.89 = 6,471.87 : x
  2. Step 2: Convert to fraction form
    11,188.47/15,438.89 = 6,471.87/x
  3. Step 3: Cross multiply
    11,188.47x = 15,438.89 × 6,471.87
  4. Step 4: Simplify right side
    11,188.47x = 99,918,489.02
  5. Step 5: Solve for x
    x = 99,918,489.02/11,188.47
  6. Step 6: Final answer
    x = 8,930.49

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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.