Home / 20,741.42-31,112.13-5,159.05

Finding the Fourth Proportional to 20,741.42, 31,112.13 and 5,159.05

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Solution

The fourth proportional to 20,741.42, 31,112.13 and 5,159.05 is: 7,738.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.42 : 31,112.13 = 5,159.05 : x
  2. Step 2: Convert to fraction form
    20,741.42/31,112.13 = 5,159.05/x
  3. Step 3: Cross multiply
    20,741.42x = 31,112.13 × 5,159.05
  4. Step 4: Simplify right side
    20,741.42x = 160,509,034.28
  5. Step 5: Solve for x
    x = 160,509,034.28/20,741.42
  6. Step 6: Final answer
    x = 7,738.58

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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.