Home / 20,702.63-28,565.70-13,150.19

Finding the Fourth Proportional to 20,702.63, 28,565.70 and 13,150.19

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Solution

The fourth proportional to 20,702.63, 28,565.70 and 13,150.19 is: 18,144.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.63 : 28,565.70 = 13,150.19 : x
  2. Step 2: Convert to fraction form
    20,702.63/28,565.70 = 13,150.19/x
  3. Step 3: Cross multiply
    20,702.63x = 28,565.70 × 13,150.19
  4. Step 4: Simplify right side
    20,702.63x = 375,644,404.58
  5. Step 5: Solve for x
    x = 375,644,404.58/20,702.63
  6. Step 6: Final answer
    x = 18,144.77

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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.