Home / 20,125.36-30,177.90-6,974.20

Finding the Fourth Proportional to 20,125.36, 30,177.90 and 6,974.20

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Solution

The fourth proportional to 20,125.36, 30,177.90 and 6,974.20 is: 10,457.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.36 : 30,177.90 = 6,974.20 : x
  2. Step 2: Convert to fraction form
    20,125.36/30,177.90 = 6,974.20/x
  3. Step 3: Cross multiply
    20,125.36x = 30,177.90 × 6,974.20
  4. Step 4: Simplify right side
    20,125.36x = 210,466,710.18
  5. Step 5: Solve for x
    x = 210,466,710.18/20,125.36
  6. Step 6: Final answer
    x = 10,457.79

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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.