Home / 20,948.27-28,878.86-16,661.75

Finding the Fourth Proportional to 20,948.27, 28,878.86 and 16,661.75

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Solution

The fourth proportional to 20,948.27, 28,878.86 and 16,661.75 is: 22,969.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.27 : 28,878.86 = 16,661.75 : x
  2. Step 2: Convert to fraction form
    20,948.27/28,878.86 = 16,661.75/x
  3. Step 3: Cross multiply
    20,948.27x = 28,878.86 × 16,661.75
  4. Step 4: Simplify right side
    20,948.27x = 481,172,345.61
  5. Step 5: Solve for x
    x = 481,172,345.61/20,948.27
  6. Step 6: Final answer
    x = 22,969.55

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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.