Home / 20,121.06-30,177.60-10,123.14

Finding the Fourth Proportional to 20,121.06, 30,177.60 and 10,123.14

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Solution

The fourth proportional to 20,121.06, 30,177.60 and 10,123.14 is: 15,182.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.06 : 30,177.60 = 10,123.14 : x
  2. Step 2: Convert to fraction form
    20,121.06/30,177.60 = 10,123.14/x
  3. Step 3: Cross multiply
    20,121.06x = 30,177.60 × 10,123.14
  4. Step 4: Simplify right side
    20,121.06x = 305,492,069.66
  5. Step 5: Solve for x
    x = 305,492,069.66/20,121.06
  6. Step 6: Final answer
    x = 15,182.70

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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.