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Finding the Fourth Proportional to 9,139.16, 13,716.42 and 8,563.16

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Solution

The fourth proportional to 9,139.16, 13,716.42 and 8,563.16 is: 12,851.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.16 : 13,716.42 = 8,563.16 : x
  2. Step 2: Convert to fraction form
    9,139.16/13,716.42 = 8,563.16/x
  3. Step 3: Cross multiply
    9,139.16x = 13,716.42 × 8,563.16
  4. Step 4: Simplify right side
    9,139.16x = 117,455,899.09
  5. Step 5: Solve for x
    x = 117,455,899.09/9,139.16
  6. Step 6: Final answer
    x = 12,851.94

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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.