Home / 11,188.56-15,438.50-6,407.76

Finding the Fourth Proportional to 11,188.56, 15,438.50 and 6,407.76

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Solution

The fourth proportional to 11,188.56, 15,438.50 and 6,407.76 is: 8,841.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,188.56 : 15,438.50 = 6,407.76 : x
  2. Step 2: Convert to fraction form
    11,188.56/15,438.50 = 6,407.76/x
  3. Step 3: Cross multiply
    11,188.56x = 15,438.50 × 6,407.76
  4. Step 4: Simplify right side
    11,188.56x = 98,926,202.76
  5. Step 5: Solve for x
    x = 98,926,202.76/11,188.56
  6. Step 6: Final answer
    x = 8,841.73

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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.