Home / 20,347.60-30,497.10-10,481.80

Finding the Fourth Proportional to 20,347.60, 30,497.10 and 10,481.80

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Solution

The fourth proportional to 20,347.60, 30,497.10 and 10,481.80 is: 15,710.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.60 : 30,497.10 = 10,481.80 : x
  2. Step 2: Convert to fraction form
    20,347.60/30,497.10 = 10,481.80/x
  3. Step 3: Cross multiply
    20,347.60x = 30,497.10 × 10,481.80
  4. Step 4: Simplify right side
    20,347.60x = 319,664,502.78
  5. Step 5: Solve for x
    x = 319,664,502.78/20,347.60
  6. Step 6: Final answer
    x = 15,710.18

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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.