Home / 15,042.12-20,738.88-10,318.20

Finding the Fourth Proportional to 15,042.12, 20,738.88 and 10,318.20

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Solution

The fourth proportional to 15,042.12, 20,738.88 and 10,318.20 is: 14,225.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,042.12 : 20,738.88 = 10,318.20 : x
  2. Step 2: Convert to fraction form
    15,042.12/20,738.88 = 10,318.20/x
  3. Step 3: Cross multiply
    15,042.12x = 20,738.88 × 10,318.20
  4. Step 4: Simplify right side
    15,042.12x = 213,987,911.62
  5. Step 5: Solve for x
    x = 213,987,911.62/15,042.12
  6. Step 6: Final answer
    x = 14,225.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.