Home / 10,579.20-15,868.80-2,681.70

Finding the Fourth Proportional to 10,579.20, 15,868.80 and 2,681.70

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Solution

The fourth proportional to 10,579.20, 15,868.80 and 2,681.70 is: 4,022.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,579.20 : 15,868.80 = 2,681.70 : x
  2. Step 2: Convert to fraction form
    10,579.20/15,868.80 = 2,681.70/x
  3. Step 3: Cross multiply
    10,579.20x = 15,868.80 × 2,681.70
  4. Step 4: Simplify right side
    10,579.20x = 42,555,360.96
  5. Step 5: Solve for x
    x = 42,555,360.96/10,579.20
  6. Step 6: Final answer
    x = 4,022.55

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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.