Home / 21,753.90-30,024.54-12,801.78

Finding the Fourth Proportional to 21,753.90, 30,024.54 and 12,801.78

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Solution

The fourth proportional to 21,753.90, 30,024.54 and 12,801.78 is: 17,668.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,753.90 : 30,024.54 = 12,801.78 : x
  2. Step 2: Convert to fraction form
    21,753.90/30,024.54 = 12,801.78/x
  3. Step 3: Cross multiply
    21,753.90x = 30,024.54 × 12,801.78
  4. Step 4: Simplify right side
    21,753.90x = 384,367,555.68
  5. Step 5: Solve for x
    x = 384,367,555.68/21,753.90
  6. Step 6: Final answer
    x = 17,668.90

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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.