Home / 20,920.69-31,381.07-14,708.49

Finding the Fourth Proportional to 20,920.69, 31,381.07 and 14,708.49

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Solution

The fourth proportional to 20,920.69, 31,381.07 and 14,708.49 is: 22,062.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,920.69 : 31,381.07 = 14,708.49 : x
  2. Step 2: Convert to fraction form
    20,920.69/31,381.07 = 14,708.49/x
  3. Step 3: Cross multiply
    20,920.69x = 31,381.07 × 14,708.49
  4. Step 4: Simplify right side
    20,920.69x = 461,568,154.28
  5. Step 5: Solve for x
    x = 461,568,154.28/20,920.69
  6. Step 6: Final answer
    x = 22,062.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.