Home / 20,521.60-28,319.04-11,569.44

Finding the Fourth Proportional to 20,521.60, 28,319.04 and 11,569.44

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Solution

The fourth proportional to 20,521.60, 28,319.04 and 11,569.44 is: 15,965.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521.60 : 28,319.04 = 11,569.44 : x
  2. Step 2: Convert to fraction form
    20,521.60/28,319.04 = 11,569.44/x
  3. Step 3: Cross multiply
    20,521.60x = 28,319.04 × 11,569.44
  4. Step 4: Simplify right side
    20,521.60x = 327,635,434.14
  5. Step 5: Solve for x
    x = 327,635,434.14/20,521.60
  6. Step 6: Final answer
    x = 15,965.39

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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.