Home / 19,966.20-29,967.78-10,112.40

Finding the Fourth Proportional to 19,966.20, 29,967.78 and 10,112.40

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Solution

The fourth proportional to 19,966.20, 29,967.78 and 10,112.40 is: 15,177.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,966.20 : 29,967.78 = 10,112.40 : x
  2. Step 2: Convert to fraction form
    19,966.20/29,967.78 = 10,112.40/x
  3. Step 3: Cross multiply
    19,966.20x = 29,967.78 × 10,112.40
  4. Step 4: Simplify right side
    19,966.20x = 303,046,178.47
  5. Step 5: Solve for x
    x = 303,046,178.47/19,966.20
  6. Step 6: Final answer
    x = 15,177.96

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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.