Home / 19,193.40-28,748.36-9,311.88

Finding the Fourth Proportional to 19,193.40, 28,748.36 and 9,311.88

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Solution

The fourth proportional to 19,193.40, 28,748.36 and 9,311.88 is: 13,947.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,193.40 : 28,748.36 = 9,311.88 : x
  2. Step 2: Convert to fraction form
    19,193.40/28,748.36 = 9,311.88/x
  3. Step 3: Cross multiply
    19,193.40x = 28,748.36 × 9,311.88
  4. Step 4: Simplify right side
    19,193.40x = 267,701,278.52
  5. Step 5: Solve for x
    x = 267,701,278.52/19,193.40
  6. Step 6: Final answer
    x = 13,947.57

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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.