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Finding the Fourth Proportional to 18,681.04, 28,026 and 5,354.20

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Solution

The fourth proportional to 18,681.04, 28,026 and 5,354.20 is: 8,032.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.04 : 28,026 = 5,354.20 : x
  2. Step 2: Convert to fraction form
    18,681.04/28,026 = 5,354.20/x
  3. Step 3: Cross multiply
    18,681.04x = 28,026 × 5,354.20
  4. Step 4: Simplify right side
    18,681.04x = 150,056,809.20
  5. Step 5: Solve for x
    x = 150,056,809.20/18,681.04
  6. Step 6: Final answer
    x = 8,032.57

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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.