Home / 14,961.57-20,646.86-8,247.21

Finding the Fourth Proportional to 14,961.57, 20,646.86 and 8,247.21

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Solution

The fourth proportional to 14,961.57, 20,646.86 and 8,247.21 is: 11,381.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,961.57 : 20,646.86 = 8,247.21 : x
  2. Step 2: Convert to fraction form
    14,961.57/20,646.86 = 8,247.21/x
  3. Step 3: Cross multiply
    14,961.57x = 20,646.86 × 8,247.21
  4. Step 4: Simplify right side
    14,961.57x = 170,278,949.02
  5. Step 5: Solve for x
    x = 170,278,949.02/14,961.57
  6. Step 6: Final answer
    x = 11,381.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.