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Finding the Fourth Proportional to 22,005.80, 32,931.90 and 20,162.60

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Solution

The fourth proportional to 22,005.80, 32,931.90 and 20,162.60 is: 30,173.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,005.80 : 32,931.90 = 20,162.60 : x
  2. Step 2: Convert to fraction form
    22,005.80/32,931.90 = 20,162.60/x
  3. Step 3: Cross multiply
    22,005.80x = 32,931.90 × 20,162.60
  4. Step 4: Simplify right side
    22,005.80x = 663,992,726.94
  5. Step 5: Solve for x
    x = 663,992,726.94/22,005.80
  6. Step 6: Final answer
    x = 30,173.53

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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.