Home / 28,162.86-38,861.31-22,434.90

Finding the Fourth Proportional to 28,162.86, 38,861.31 and 22,434.90

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Solution

The fourth proportional to 28,162.86, 38,861.31 and 22,434.90 is: 30,957.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,162.86 : 38,861.31 = 22,434.90 : x
  2. Step 2: Convert to fraction form
    28,162.86/38,861.31 = 22,434.90/x
  3. Step 3: Cross multiply
    28,162.86x = 38,861.31 × 22,434.90
  4. Step 4: Simplify right side
    28,162.86x = 871,849,752.27
  5. Step 5: Solve for x
    x = 871,849,752.27/28,162.86
  6. Step 6: Final answer
    x = 30,957.43

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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.