Home / 20,702.52-28,564.62-11,748

Finding the Fourth Proportional to 20,702.52, 28,564.62 and 11,748

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Solution

The fourth proportional to 20,702.52, 28,564.62 and 11,748 is: 16,209.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.52 : 28,564.62 = 11,748 : x
  2. Step 2: Convert to fraction form
    20,702.52/28,564.62 = 11,748/x
  3. Step 3: Cross multiply
    20,702.52x = 28,564.62 × 11,748
  4. Step 4: Simplify right side
    20,702.52x = 335,577,155.76
  5. Step 5: Solve for x
    x = 335,577,155.76/20,702.52
  6. Step 6: Final answer
    x = 16,209.48

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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.