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Finding the Fourth Proportional to 13,034.31, 17,987.31 and 7,066.11

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Solution

The fourth proportional to 13,034.31, 17,987.31 and 7,066.11 is: 9,751.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,034.31 : 17,987.31 = 7,066.11 : x
  2. Step 2: Convert to fraction form
    13,034.31/17,987.31 = 7,066.11/x
  3. Step 3: Cross multiply
    13,034.31x = 17,987.31 × 7,066.11
  4. Step 4: Simplify right side
    13,034.31x = 127,100,311.06
  5. Step 5: Solve for x
    x = 127,100,311.06/13,034.31
  6. Step 6: Final answer
    x = 9,751.21

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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.