Home / 12,758.16-17,591.04-10,986.72

Finding the Fourth Proportional to 12,758.16, 17,591.04 and 10,986.72

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Solution

The fourth proportional to 12,758.16, 17,591.04 and 10,986.72 is: 15,148.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,758.16 : 17,591.04 = 10,986.72 : x
  2. Step 2: Convert to fraction form
    12,758.16/17,591.04 = 10,986.72/x
  3. Step 3: Cross multiply
    12,758.16x = 17,591.04 × 10,986.72
  4. Step 4: Simplify right side
    12,758.16x = 193,267,830.99
  5. Step 5: Solve for x
    x = 193,267,830.99/12,758.16
  6. Step 6: Final answer
    x = 15,148.57

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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.