Home / 10,319.80-15,470.10-8,097.40

Finding the Fourth Proportional to 10,319.80, 15,470.10 and 8,097.40

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Solution

The fourth proportional to 10,319.80, 15,470.10 and 8,097.40 is: 12,138.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,319.80 : 15,470.10 = 8,097.40 : x
  2. Step 2: Convert to fraction form
    10,319.80/15,470.10 = 8,097.40/x
  3. Step 3: Cross multiply
    10,319.80x = 15,470.10 × 8,097.40
  4. Step 4: Simplify right side
    10,319.80x = 125,267,587.74
  5. Step 5: Solve for x
    x = 125,267,587.74/10,319.80
  6. Step 6: Final answer
    x = 12,138.57

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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.