Home / 18,720.12-25,833.72-10,761.96

Finding the Fourth Proportional to 18,720.12, 25,833.72 and 10,761.96

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Solution

The fourth proportional to 18,720.12, 25,833.72 and 10,761.96 is: 14,851.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.12 : 25,833.72 = 10,761.96 : x
  2. Step 2: Convert to fraction form
    18,720.12/25,833.72 = 10,761.96/x
  3. Step 3: Cross multiply
    18,720.12x = 25,833.72 × 10,761.96
  4. Step 4: Simplify right side
    18,720.12x = 278,021,461.29
  5. Step 5: Solve for x
    x = 278,021,461.29/18,720.12
  6. Step 6: Final answer
    x = 14,851.48

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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.