Home / 20,320.92-30,476.76-9,785.57

Finding the Fourth Proportional to 20,320.92, 30,476.76 and 9,785.57

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Solution

The fourth proportional to 20,320.92, 30,476.76 and 9,785.57 is: 14,676.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.92 : 30,476.76 = 9,785.57 : x
  2. Step 2: Convert to fraction form
    20,320.92/30,476.76 = 9,785.57/x
  3. Step 3: Cross multiply
    20,320.92x = 30,476.76 × 9,785.57
  4. Step 4: Simplify right side
    20,320.92x = 298,232,315.97
  5. Step 5: Solve for x
    x = 298,232,315.97/20,320.92
  6. Step 6: Final answer
    x = 14,676.12

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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.