Home / 28,031.92-42,051.72-12,449.20

Finding the Fourth Proportional to 28,031.92, 42,051.72 and 12,449.20

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Solution

The fourth proportional to 28,031.92, 42,051.72 and 12,449.20 is: 18,675.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.92 : 42,051.72 = 12,449.20 : x
  2. Step 2: Convert to fraction form
    28,031.92/42,051.72 = 12,449.20/x
  3. Step 3: Cross multiply
    28,031.92x = 42,051.72 × 12,449.20
  4. Step 4: Simplify right side
    28,031.92x = 523,510,272.62
  5. Step 5: Solve for x
    x = 523,510,272.62/28,031.92
  6. Step 6: Final answer
    x = 18,675.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.