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Finding the Fourth Proportional to 10,273.80, 15,410.70 and 8,159.70

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Solution

The fourth proportional to 10,273.80, 15,410.70 and 8,159.70 is: 12,239.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,273.80 : 15,410.70 = 8,159.70 : x
  2. Step 2: Convert to fraction form
    10,273.80/15,410.70 = 8,159.70/x
  3. Step 3: Cross multiply
    10,273.80x = 15,410.70 × 8,159.70
  4. Step 4: Simplify right side
    10,273.80x = 125,746,688.79
  5. Step 5: Solve for x
    x = 125,746,688.79/10,273.80
  6. Step 6: Final answer
    x = 12,239.55

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1.5x scale

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.