Home / 12,785.13-17,639.93-8,245.89

Finding the Fourth Proportional to 12,785.13, 17,639.93 and 8,245.89

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Solution

The fourth proportional to 12,785.13, 17,639.93 and 8,245.89 is: 11,377.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,785.13 : 17,639.93 = 8,245.89 : x
  2. Step 2: Convert to fraction form
    12,785.13/17,639.93 = 8,245.89/x
  3. Step 3: Cross multiply
    12,785.13x = 17,639.93 × 8,245.89
  4. Step 4: Simplify right side
    12,785.13x = 145,456,881.16
  5. Step 5: Solve for x
    x = 145,456,881.16/12,785.13
  6. Step 6: Final answer
    x = 11,377.04

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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.