Home / 20,702.13-28,572.17-12,323.49

Finding the Fourth Proportional to 20,702.13, 28,572.17 and 12,323.49

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Solution

The fourth proportional to 20,702.13, 28,572.17 and 12,323.49 is: 17,008.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.13 : 28,572.17 = 12,323.49 : x
  2. Step 2: Convert to fraction form
    20,702.13/28,572.17 = 12,323.49/x
  3. Step 3: Cross multiply
    20,702.13x = 28,572.17 × 12,323.49
  4. Step 4: Simplify right side
    20,702.13x = 352,108,851.27
  5. Step 5: Solve for x
    x = 352,108,851.27/20,702.13
  6. Step 6: Final answer
    x = 17,008.34

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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.