Home / 20,300.24-28,013.18-11,345.96

Finding the Fourth Proportional to 20,300.24, 28,013.18 and 11,345.96

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Solution

The fourth proportional to 20,300.24, 28,013.18 and 11,345.96 is: 15,656.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.24 : 28,013.18 = 11,345.96 : x
  2. Step 2: Convert to fraction form
    20,300.24/28,013.18 = 11,345.96/x
  3. Step 3: Cross multiply
    20,300.24x = 28,013.18 × 11,345.96
  4. Step 4: Simplify right side
    20,300.24x = 317,836,419.75
  5. Step 5: Solve for x
    x = 317,836,419.75/20,300.24
  6. Step 6: Final answer
    x = 15,656.78

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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.