Home / 21,342.80-29,452.40-12,267.92

Finding the Fourth Proportional to 21,342.80, 29,452.40 and 12,267.92

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Solution

The fourth proportional to 21,342.80, 29,452.40 and 12,267.92 is: 16,929.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.80 : 29,452.40 = 12,267.92 : x
  2. Step 2: Convert to fraction form
    21,342.80/29,452.40 = 12,267.92/x
  3. Step 3: Cross multiply
    21,342.80x = 29,452.40 × 12,267.92
  4. Step 4: Simplify right side
    21,342.80x = 361,319,687.01
  5. Step 5: Solve for x
    x = 361,319,687.01/21,342.80
  6. Step 6: Final answer
    x = 16,929.35

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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.