Home / 20,071.74-30,101.23-18,761.36

Finding the Fourth Proportional to 20,071.74, 30,101.23 and 18,761.36

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Solution

The fourth proportional to 20,071.74, 30,101.23 and 18,761.36 is: 28,136.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.74 : 30,101.23 = 18,761.36 : x
  2. Step 2: Convert to fraction form
    20,071.74/30,101.23 = 18,761.36/x
  3. Step 3: Cross multiply
    20,071.74x = 30,101.23 × 18,761.36
  4. Step 4: Simplify right side
    20,071.74x = 564,740,012.47
  5. Step 5: Solve for x
    x = 564,740,012.47/20,071.74
  6. Step 6: Final answer
    x = 28,136.08

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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.