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Finding the Fourth Proportional to 18,892.89, 28,340.28 and 7,207.02

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Solution

The fourth proportional to 18,892.89, 28,340.28 and 7,207.02 is: 10,810.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.89 : 28,340.28 = 7,207.02 : x
  2. Step 2: Convert to fraction form
    18,892.89/28,340.28 = 7,207.02/x
  3. Step 3: Cross multiply
    18,892.89x = 28,340.28 × 7,207.02
  4. Step 4: Simplify right side
    18,892.89x = 204,248,964.77
  5. Step 5: Solve for x
    x = 204,248,964.77/18,892.89
  6. Step 6: Final answer
    x = 10,810.89

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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.