Home / 20,914.41-31,221.17-17,920.62

Finding the Fourth Proportional to 20,914.41, 31,221.17 and 17,920.62

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Solution

The fourth proportional to 20,914.41, 31,221.17 and 17,920.62 is: 26,752.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.41 : 31,221.17 = 17,920.62 : x
  2. Step 2: Convert to fraction form
    20,914.41/31,221.17 = 17,920.62/x
  3. Step 3: Cross multiply
    20,914.41x = 31,221.17 × 17,920.62
  4. Step 4: Simplify right side
    20,914.41x = 559,502,723.53
  5. Step 5: Solve for x
    x = 559,502,723.53/20,914.41
  6. Step 6: Final answer
    x = 26,752.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.