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Finding the Fourth Proportional to 22,000.50, 30,348.27 and 13,039.20

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Solution

The fourth proportional to 22,000.50, 30,348.27 and 13,039.20 is: 17,986.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,000.50 : 30,348.27 = 13,039.20 : x
  2. Step 2: Convert to fraction form
    22,000.50/30,348.27 = 13,039.20/x
  3. Step 3: Cross multiply
    22,000.50x = 30,348.27 × 13,039.20
  4. Step 4: Simplify right side
    22,000.50x = 395,717,162.18
  5. Step 5: Solve for x
    x = 395,717,162.18/22,000.50
  6. Step 6: Final answer
    x = 17,986.73

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Double scale
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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.