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Finding the Fourth Proportional to 20,159.80, 30,239.98 and 5,368.66

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Solution

The fourth proportional to 20,159.80, 30,239.98 and 5,368.66 is: 8,053.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.80 : 30,239.98 = 5,368.66 : x
  2. Step 2: Convert to fraction form
    20,159.80/30,239.98 = 5,368.66/x
  3. Step 3: Cross multiply
    20,159.80x = 30,239.98 × 5,368.66
  4. Step 4: Simplify right side
    20,159.80x = 162,348,171.03
  5. Step 5: Solve for x
    x = 162,348,171.03/20,159.80
  6. Step 6: Final answer
    x = 8,053.06

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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.