Home / 12,785.50-17,645.61-7,197.58

Finding the Fourth Proportional to 12,785.50, 17,645.61 and 7,197.58

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Solution

The fourth proportional to 12,785.50, 17,645.61 and 7,197.58 is: 9,933.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,785.50 : 17,645.61 = 7,197.58 : x
  2. Step 2: Convert to fraction form
    12,785.50/17,645.61 = 7,197.58/x
  3. Step 3: Cross multiply
    12,785.50x = 17,645.61 × 7,197.58
  4. Step 4: Simplify right side
    12,785.50x = 127,005,689.62
  5. Step 5: Solve for x
    x = 127,005,689.62/12,785.50
  6. Step 6: Final answer
    x = 9,933.57

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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.