Home / 15,739.22-21,691.19-14,740.49

Finding the Fourth Proportional to 15,739.22, 21,691.19 and 14,740.49

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Solution

The fourth proportional to 15,739.22, 21,691.19 and 14,740.49 is: 20,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,739.22 : 21,691.19 = 14,740.49 : x
  2. Step 2: Convert to fraction form
    15,739.22/21,691.19 = 14,740.49/x
  3. Step 3: Cross multiply
    15,739.22x = 21,691.19 × 14,740.49
  4. Step 4: Simplify right side
    15,739.22x = 319,738,769.28
  5. Step 5: Solve for x
    x = 319,738,769.28/15,739.22
  6. Step 6: Final answer
    x = 20,314.78

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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.