Home / 28,926.08-43,387.28-9,218.78

Finding the Fourth Proportional to 28,926.08, 43,387.28 and 9,218.78

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Solution

The fourth proportional to 28,926.08, 43,387.28 and 9,218.78 is: 13,827.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,926.08 : 43,387.28 = 9,218.78 : x
  2. Step 2: Convert to fraction form
    28,926.08/43,387.28 = 9,218.78/x
  3. Step 3: Cross multiply
    28,926.08x = 43,387.28 × 9,218.78
  4. Step 4: Simplify right side
    28,926.08x = 399,977,789.12
  5. Step 5: Solve for x
    x = 399,977,789.12/28,926.08
  6. Step 6: Final answer
    x = 13,827.58

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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.