Home / 20,987.46-31,481.16-14,393.66

Finding the Fourth Proportional to 20,987.46, 31,481.16 and 14,393.66

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Solution

The fourth proportional to 20,987.46, 31,481.16 and 14,393.66 is: 21,590.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987.46 : 31,481.16 = 14,393.66 : x
  2. Step 2: Convert to fraction form
    20,987.46/31,481.16 = 14,393.66/x
  3. Step 3: Cross multiply
    20,987.46x = 31,481.16 × 14,393.66
  4. Step 4: Simplify right side
    20,987.46x = 453,128,902.06
  5. Step 5: Solve for x
    x = 453,128,902.06/20,987.46
  6. Step 6: Final answer
    x = 21,590.46

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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.