Home / 28,380.68-39,165.40-16,446.32

Finding the Fourth Proportional to 28,380.68, 39,165.40 and 16,446.32

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Solution

The fourth proportional to 28,380.68, 39,165.40 and 16,446.32 is: 22,695.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380.68 : 39,165.40 = 16,446.32 : x
  2. Step 2: Convert to fraction form
    28,380.68/39,165.40 = 16,446.32/x
  3. Step 3: Cross multiply
    28,380.68x = 39,165.40 × 16,446.32
  4. Step 4: Simplify right side
    28,380.68x = 644,126,701.33
  5. Step 5: Solve for x
    x = 644,126,701.33/28,380.68
  6. Step 6: Final answer
    x = 22,695.96

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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.