Home / 12,865.17-17,752.68-7,199.58

Finding the Fourth Proportional to 12,865.17, 17,752.68 and 7,199.58

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Solution

The fourth proportional to 12,865.17, 17,752.68 and 7,199.58 is: 9,934.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.17 : 17,752.68 = 7,199.58 : x
  2. Step 2: Convert to fraction form
    12,865.17/17,752.68 = 7,199.58/x
  3. Step 3: Cross multiply
    12,865.17x = 17,752.68 × 7,199.58
  4. Step 4: Simplify right side
    12,865.17x = 127,811,839.87
  5. Step 5: Solve for x
    x = 127,811,839.87/12,865.17
  6. Step 6: Final answer
    x = 9,934.72

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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.