Home / 20,775.13-31,177.74-8,126.76

Finding the Fourth Proportional to 20,775.13, 31,177.74 and 8,126.76

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Solution

The fourth proportional to 20,775.13, 31,177.74 and 8,126.76 is: 12,196.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.13 : 31,177.74 = 8,126.76 : x
  2. Step 2: Convert to fraction form
    20,775.13/31,177.74 = 8,126.76/x
  3. Step 3: Cross multiply
    20,775.13x = 31,177.74 × 8,126.76
  4. Step 4: Simplify right side
    20,775.13x = 253,373,826.08
  5. Step 5: Solve for x
    x = 253,373,826.08/20,775.13
  6. Step 6: Final answer
    x = 12,196.01

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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.