Home / 10,591.21-15,875.88-5,040.55

Finding the Fourth Proportional to 10,591.21, 15,875.88 and 5,040.55

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Solution

The fourth proportional to 10,591.21, 15,875.88 and 5,040.55 is: 7,555.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,591.21 : 15,875.88 = 5,040.55 : x
  2. Step 2: Convert to fraction form
    10,591.21/15,875.88 = 5,040.55/x
  3. Step 3: Cross multiply
    10,591.21x = 15,875.88 × 5,040.55
  4. Step 4: Simplify right side
    10,591.21x = 80,023,166.93
  5. Step 5: Solve for x
    x = 80,023,166.93/10,591.21
  6. Step 6: Final answer
    x = 7,555.62

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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.