Home / 13,375.68-20,031.98-10,603.90

Finding the Fourth Proportional to 13,375.68, 20,031.98 and 10,603.90

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Solution

The fourth proportional to 13,375.68, 20,031.98 and 10,603.90 is: 15,880.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.68 : 20,031.98 = 10,603.90 : x
  2. Step 2: Convert to fraction form
    13,375.68/20,031.98 = 10,603.90/x
  3. Step 3: Cross multiply
    13,375.68x = 20,031.98 × 10,603.90
  4. Step 4: Simplify right side
    13,375.68x = 212,417,112.72
  5. Step 5: Solve for x
    x = 212,417,112.72/13,375.68
  6. Step 6: Final answer
    x = 15,880.85

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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.