Home / 28,259.82-42,397.14-8,538.90

Finding the Fourth Proportional to 28,259.82, 42,397.14 and 8,538.90

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Solution

The fourth proportional to 28,259.82, 42,397.14 and 8,538.90 is: 12,810.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,259.82 : 42,397.14 = 8,538.90 : x
  2. Step 2: Convert to fraction form
    28,259.82/42,397.14 = 8,538.90/x
  3. Step 3: Cross multiply
    28,259.82x = 42,397.14 × 8,538.90
  4. Step 4: Simplify right side
    28,259.82x = 362,024,938.75
  5. Step 5: Solve for x
    x = 362,024,938.75/28,259.82
  6. Step 6: Final answer
    x = 12,810.59

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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.