Home / 20,345.46-28,057.99-13,960.78

Finding the Fourth Proportional to 20,345.46, 28,057.99 and 13,960.78

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Solution

The fourth proportional to 20,345.46, 28,057.99 and 13,960.78 is: 19,253.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.46 : 28,057.99 = 13,960.78 : x
  2. Step 2: Convert to fraction form
    20,345.46/28,057.99 = 13,960.78/x
  3. Step 3: Cross multiply
    20,345.46x = 28,057.99 × 13,960.78
  4. Step 4: Simplify right side
    20,345.46x = 391,711,425.63
  5. Step 5: Solve for x
    x = 391,711,425.63/20,345.46
  6. Step 6: Final answer
    x = 19,253.01

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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.