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Finding the Fourth Proportional to 20,263.61, 30,381.05 and 7,773.09

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Solution

The fourth proportional to 20,263.61, 30,381.05 and 7,773.09 is: 11,654.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,263.61 : 30,381.05 = 7,773.09 : x
  2. Step 2: Convert to fraction form
    20,263.61/30,381.05 = 7,773.09/x
  3. Step 3: Cross multiply
    20,263.61x = 30,381.05 × 7,773.09
  4. Step 4: Simplify right side
    20,263.61x = 236,154,597.08
  5. Step 5: Solve for x
    x = 236,154,597.08/20,263.61
  6. Step 6: Final answer
    x = 11,654.13

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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.