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Finding the Fourth Proportional to 18,428.12, 27,652.88 and 7,753.69

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Solution

The fourth proportional to 18,428.12, 27,652.88 and 7,753.69 is: 11,635.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.12 : 27,652.88 = 7,753.69 : x
  2. Step 2: Convert to fraction form
    18,428.12/27,652.88 = 7,753.69/x
  3. Step 3: Cross multiply
    18,428.12x = 27,652.88 × 7,753.69
  4. Step 4: Simplify right side
    18,428.12x = 214,411,875.77
  5. Step 5: Solve for x
    x = 214,411,875.77/18,428.12
  6. Step 6: Final answer
    x = 11,635.04

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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.