Home / 13,422.20-20,133.30-10,117.40

Finding the Fourth Proportional to 13,422.20, 20,133.30 and 10,117.40

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Solution

The fourth proportional to 13,422.20, 20,133.30 and 10,117.40 is: 15,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.20 : 20,133.30 = 10,117.40 : x
  2. Step 2: Convert to fraction form
    13,422.20/20,133.30 = 10,117.40/x
  3. Step 3: Cross multiply
    13,422.20x = 20,133.30 × 10,117.40
  4. Step 4: Simplify right side
    13,422.20x = 203,696,649.42
  5. Step 5: Solve for x
    x = 203,696,649.42/13,422.20
  6. Step 6: Final answer
    x = 15,176.10

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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.