Home / 13,511.52-20,276.88-4,747.20

Finding the Fourth Proportional to 13,511.52, 20,276.88 and 4,747.20

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Solution

The fourth proportional to 13,511.52, 20,276.88 and 4,747.20 is: 7,124.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.52 : 20,276.88 = 4,747.20 : x
  2. Step 2: Convert to fraction form
    13,511.52/20,276.88 = 4,747.20/x
  3. Step 3: Cross multiply
    13,511.52x = 20,276.88 × 4,747.20
  4. Step 4: Simplify right side
    13,511.52x = 96,258,404.74
  5. Step 5: Solve for x
    x = 96,258,404.74/13,511.52
  6. Step 6: Final answer
    x = 7,124.17

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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.