Home / 10,208.76-15,281.31-7,862.70

Finding the Fourth Proportional to 10,208.76, 15,281.31 and 7,862.70

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Solution

The fourth proportional to 10,208.76, 15,281.31 and 7,862.70 is: 11,769.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,208.76 : 15,281.31 = 7,862.70 : x
  2. Step 2: Convert to fraction form
    10,208.76/15,281.31 = 7,862.70/x
  3. Step 3: Cross multiply
    10,208.76x = 15,281.31 × 7,862.70
  4. Step 4: Simplify right side
    10,208.76x = 120,152,356.14
  5. Step 5: Solve for x
    x = 120,152,356.14/10,208.76
  6. Step 6: Final answer
    x = 11,769.53

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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.