Home / 15,422.76-23,139-6,661.80

Finding the Fourth Proportional to 15,422.76, 23,139 and 6,661.80

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Solution

The fourth proportional to 15,422.76, 23,139 and 6,661.80 is: 9,994.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.76 : 23,139 = 6,661.80 : x
  2. Step 2: Convert to fraction form
    15,422.76/23,139 = 6,661.80/x
  3. Step 3: Cross multiply
    15,422.76x = 23,139 × 6,661.80
  4. Step 4: Simplify right side
    15,422.76x = 154,147,390.20
  5. Step 5: Solve for x
    x = 154,147,390.20/15,422.76
  6. Step 6: Final answer
    x = 9,994.80

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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.