Home / 11,189.52-15,439.80-6,472.88

Finding the Fourth Proportional to 11,189.52, 15,439.80 and 6,472.88

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Solution

The fourth proportional to 11,189.52, 15,439.80 and 6,472.88 is: 8,931.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,189.52 : 15,439.80 = 6,472.88 : x
  2. Step 2: Convert to fraction form
    11,189.52/15,439.80 = 6,472.88/x
  3. Step 3: Cross multiply
    11,189.52x = 15,439.80 × 6,472.88
  4. Step 4: Simplify right side
    11,189.52x = 99,939,972.62
  5. Step 5: Solve for x
    x = 99,939,972.62/11,189.52
  6. Step 6: Final answer
    x = 8,931.57

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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.