Home / 12,125.80-16,719.78-10,023.40

Finding the Fourth Proportional to 12,125.80, 16,719.78 and 10,023.40

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Solution

The fourth proportional to 12,125.80, 16,719.78 and 10,023.40 is: 13,820.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.80 : 16,719.78 = 10,023.40 : x
  2. Step 2: Convert to fraction form
    12,125.80/16,719.78 = 10,023.40/x
  3. Step 3: Cross multiply
    12,125.80x = 16,719.78 × 10,023.40
  4. Step 4: Simplify right side
    12,125.80x = 167,589,042.85
  5. Step 5: Solve for x
    x = 167,589,042.85/12,125.80
  6. Step 6: Final answer
    x = 13,820.86

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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.