Home / 20,969.73-28,937.97-15,616.13

Finding the Fourth Proportional to 20,969.73, 28,937.97 and 15,616.13

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Solution

The fourth proportional to 20,969.73, 28,937.97 and 15,616.13 is: 21,550.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.73 : 28,937.97 = 15,616.13 : x
  2. Step 2: Convert to fraction form
    20,969.73/28,937.97 = 15,616.13/x
  3. Step 3: Cross multiply
    20,969.73x = 28,937.97 × 15,616.13
  4. Step 4: Simplify right side
    20,969.73x = 451,898,956.77
  5. Step 5: Solve for x
    x = 451,898,956.77/20,969.73
  6. Step 6: Final answer
    x = 21,550.06

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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.