Home / 20,061.72-30,079.44-10,187.28

Finding the Fourth Proportional to 20,061.72, 30,079.44 and 10,187.28

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Solution

The fourth proportional to 20,061.72, 30,079.44 and 10,187.28 is: 15,274.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061.72 : 30,079.44 = 10,187.28 : x
  2. Step 2: Convert to fraction form
    20,061.72/30,079.44 = 10,187.28/x
  3. Step 3: Cross multiply
    20,061.72x = 30,079.44 × 10,187.28
  4. Step 4: Simplify right side
    20,061.72x = 306,427,677.52
  5. Step 5: Solve for x
    x = 306,427,677.52/20,061.72
  6. Step 6: Final answer
    x = 15,274.25

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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.