Home / 21,539.52-29,722.14-12,107.88

Finding the Fourth Proportional to 21,539.52, 29,722.14 and 12,107.88

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Solution

The fourth proportional to 21,539.52, 29,722.14 and 12,107.88 is: 16,707.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.52 : 29,722.14 = 12,107.88 : x
  2. Step 2: Convert to fraction form
    21,539.52/29,722.14 = 12,107.88/x
  3. Step 3: Cross multiply
    21,539.52x = 29,722.14 × 12,107.88
  4. Step 4: Simplify right side
    21,539.52x = 359,872,104.46
  5. Step 5: Solve for x
    x = 359,872,104.46/21,539.52
  6. Step 6: Final answer
    x = 16,707.53

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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.