Home / 15,107.40-22,661.10-13,422.60

Finding the Fourth Proportional to 15,107.40, 22,661.10 and 13,422.60

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Solution

The fourth proportional to 15,107.40, 22,661.10 and 13,422.60 is: 20,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.40 : 22,661.10 = 13,422.60 : x
  2. Step 2: Convert to fraction form
    15,107.40/22,661.10 = 13,422.60/x
  3. Step 3: Cross multiply
    15,107.40x = 22,661.10 × 13,422.60
  4. Step 4: Simplify right side
    15,107.40x = 304,170,880.86
  5. Step 5: Solve for x
    x = 304,170,880.86/15,107.40
  6. Step 6: Final answer
    x = 20,133.90

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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.