Home / 13,430-20,167.72-8,758

Finding the Fourth Proportional to 13,430, 20,167.72 and 8,758

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Solution

The fourth proportional to 13,430, 20,167.72 and 8,758 is: 13,151.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430 : 20,167.72 = 8,758 : x
  2. Step 2: Convert to fraction form
    13,430/20,167.72 = 8,758/x
  3. Step 3: Cross multiply
    13,430x = 20,167.72 × 8,758
  4. Step 4: Simplify right side
    13,430x = 176,628,891.76
  5. Step 5: Solve for x
    x = 176,628,891.76/13,430
  6. Step 6: Final answer
    x = 13,151.82

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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.