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Finding the Fourth Proportional to 20,127.70, 30,191.40 and 6,087.70

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Solution

The fourth proportional to 20,127.70, 30,191.40 and 6,087.70 is: 9,131.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.70 : 30,191.40 = 6,087.70 : x
  2. Step 2: Convert to fraction form
    20,127.70/30,191.40 = 6,087.70/x
  3. Step 3: Cross multiply
    20,127.70x = 30,191.40 × 6,087.70
  4. Step 4: Simplify right side
    20,127.70x = 183,796,185.78
  5. Step 5: Solve for x
    x = 183,796,185.78/20,127.70
  6. Step 6: Final answer
    x = 9,131.50

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Half scale
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Double scale
Find fourth proportional to 20,128.70, 30,192.90 and 6,088.70
Similar ratio
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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.