Home / 28,748.08-43,092.90-21,808

Finding the Fourth Proportional to 28,748.08, 43,092.90 and 21,808

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Solution

The fourth proportional to 28,748.08, 43,092.90 and 21,808 is: 32,689.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,748.08 : 43,092.90 = 21,808 : x
  2. Step 2: Convert to fraction form
    28,748.08/43,092.90 = 21,808/x
  3. Step 3: Cross multiply
    28,748.08x = 43,092.90 × 21,808
  4. Step 4: Simplify right side
    28,748.08x = 939,769,963.20
  5. Step 5: Solve for x
    x = 939,769,963.20/28,748.08
  6. Step 6: Final answer
    x = 32,689.83

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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.