Home / 29,139.90-40,212.63-16,392.12

Finding the Fourth Proportional to 29,139.90, 40,212.63 and 16,392.12

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Solution

The fourth proportional to 29,139.90, 40,212.63 and 16,392.12 is: 22,620.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,139.90 : 40,212.63 = 16,392.12 : x
  2. Step 2: Convert to fraction form
    29,139.90/40,212.63 = 16,392.12/x
  3. Step 3: Cross multiply
    29,139.90x = 40,212.63 × 16,392.12
  4. Step 4: Simplify right side
    29,139.90x = 659,170,256.48
  5. Step 5: Solve for x
    x = 659,170,256.48/29,139.90
  6. Step 6: Final answer
    x = 22,620.88

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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.