Home / 28,189.67-42,292.80-8,471.25

Finding the Fourth Proportional to 28,189.67, 42,292.80 and 8,471.25

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Solution

The fourth proportional to 28,189.67, 42,292.80 and 8,471.25 is: 12,709.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.67 : 42,292.80 = 8,471.25 : x
  2. Step 2: Convert to fraction form
    28,189.67/42,292.80 = 8,471.25/x
  3. Step 3: Cross multiply
    28,189.67x = 42,292.80 × 8,471.25
  4. Step 4: Simplify right side
    28,189.67x = 358,272,882
  5. Step 5: Solve for x
    x = 358,272,882/28,189.67
  6. Step 6: Final answer
    x = 12,709.37

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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.