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Finding the Fourth Proportional to 17,482.66, 26,209.76 and 8,128.57

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Solution

The fourth proportional to 17,482.66, 26,209.76 and 8,128.57 is: 12,186.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,482.66 : 26,209.76 = 8,128.57 : x
  2. Step 2: Convert to fraction form
    17,482.66/26,209.76 = 8,128.57/x
  3. Step 3: Cross multiply
    17,482.66x = 26,209.76 × 8,128.57
  4. Step 4: Simplify right side
    17,482.66x = 213,047,868.84
  5. Step 5: Solve for x
    x = 213,047,868.84/17,482.66
  6. Step 6: Final answer
    x = 12,186.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.