Home / 19,139.52-28,711.44-8,749.92

Finding the Fourth Proportional to 19,139.52, 28,711.44 and 8,749.92

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Solution

The fourth proportional to 19,139.52, 28,711.44 and 8,749.92 is: 13,125.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.52 : 28,711.44 = 8,749.92 : x
  2. Step 2: Convert to fraction form
    19,139.52/28,711.44 = 8,749.92/x
  3. Step 3: Cross multiply
    19,139.52x = 28,711.44 × 8,749.92
  4. Step 4: Simplify right side
    19,139.52x = 251,222,803.08
  5. Step 5: Solve for x
    x = 251,222,803.08/19,139.52
  6. Step 6: Final answer
    x = 13,125.87

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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.