Home / 13,134.06-18,125.12-7,165.75

Finding the Fourth Proportional to 13,134.06, 18,125.12 and 7,165.75

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Solution

The fourth proportional to 13,134.06, 18,125.12 and 7,165.75 is: 9,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.06 : 18,125.12 = 7,165.75 : x
  2. Step 2: Convert to fraction form
    13,134.06/18,125.12 = 7,165.75/x
  3. Step 3: Cross multiply
    13,134.06x = 18,125.12 × 7,165.75
  4. Step 4: Simplify right side
    13,134.06x = 129,880,078.64
  5. Step 5: Solve for x
    x = 129,880,078.64/13,134.06
  6. Step 6: Final answer
    x = 9,888.80

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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.