Home / 28,221.06-42,339.83-12,635.04

Finding the Fourth Proportional to 28,221.06, 42,339.83 and 12,635.04

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Solution

The fourth proportional to 28,221.06, 42,339.83 and 12,635.04 is: 18,956.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.06 : 42,339.83 = 12,635.04 : x
  2. Step 2: Convert to fraction form
    28,221.06/42,339.83 = 12,635.04/x
  3. Step 3: Cross multiply
    28,221.06x = 42,339.83 × 12,635.04
  4. Step 4: Simplify right side
    28,221.06x = 534,965,445.64
  5. Step 5: Solve for x
    x = 534,965,445.64/28,221.06
  6. Step 6: Final answer
    x = 18,956.25

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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.