Home / 28,672.40-43,006.48-12,031.76

Finding the Fourth Proportional to 28,672.40, 43,006.48 and 12,031.76

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Solution

The fourth proportional to 28,672.40, 43,006.48 and 12,031.76 is: 18,046.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,672.40 : 43,006.48 = 12,031.76 : x
  2. Step 2: Convert to fraction form
    28,672.40/43,006.48 = 12,031.76/x
  3. Step 3: Cross multiply
    28,672.40x = 43,006.48 × 12,031.76
  4. Step 4: Simplify right side
    28,672.40x = 517,443,723.24
  5. Step 5: Solve for x
    x = 517,443,723.24/28,672.40
  6. Step 6: Final answer
    x = 18,046.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.