Home / 21,585.74-29,781.47-12,152.48

Finding the Fourth Proportional to 21,585.74, 29,781.47 and 12,152.48

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Solution

The fourth proportional to 21,585.74, 29,781.47 and 12,152.48 is: 16,766.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.74 : 29,781.47 = 12,152.48 : x
  2. Step 2: Convert to fraction form
    21,585.74/29,781.47 = 12,152.48/x
  3. Step 3: Cross multiply
    21,585.74x = 29,781.47 × 12,152.48
  4. Step 4: Simplify right side
    21,585.74x = 361,918,508.88
  5. Step 5: Solve for x
    x = 361,918,508.88/21,585.74
  6. Step 6: Final answer
    x = 16,766.56

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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.