Home / 20,624.94-30,916.26-8,139.92

Finding the Fourth Proportional to 20,624.94, 30,916.26 and 8,139.92

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Solution

The fourth proportional to 20,624.94, 30,916.26 and 8,139.92 is: 12,201.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,624.94 : 30,916.26 = 8,139.92 : x
  2. Step 2: Convert to fraction form
    20,624.94/30,916.26 = 8,139.92/x
  3. Step 3: Cross multiply
    20,624.94x = 30,916.26 × 8,139.92
  4. Step 4: Simplify right side
    20,624.94x = 251,655,728.52
  5. Step 5: Solve for x
    x = 251,655,728.52/20,624.94
  6. Step 6: Final answer
    x = 12,201.53

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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.