Home / 38,071.80-57,142.21-20,317.46

Finding the Fourth Proportional to 38,071.80, 57,142.21 and 20,317.46

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Solution

The fourth proportional to 38,071.80, 57,142.21 and 20,317.46 is: 30,494.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,071.80 : 57,142.21 = 20,317.46 : x
  2. Step 2: Convert to fraction form
    38,071.80/57,142.21 = 20,317.46/x
  3. Step 3: Cross multiply
    38,071.80x = 57,142.21 × 20,317.46
  4. Step 4: Simplify right side
    38,071.80x = 1,160,984,428.29
  5. Step 5: Solve for x
    x = 1,160,984,428.29/38,071.80
  6. Step 6: Final answer
    x = 30,494.61

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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.