Home / 13,112.28-18,095.22-7,144.08

Finding the Fourth Proportional to 13,112.28, 18,095.22 and 7,144.08

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Solution

The fourth proportional to 13,112.28, 18,095.22 and 7,144.08 is: 9,858.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.28 : 18,095.22 = 7,144.08 : x
  2. Step 2: Convert to fraction form
    13,112.28/18,095.22 = 7,144.08/x
  3. Step 3: Cross multiply
    13,112.28x = 18,095.22 × 7,144.08
  4. Step 4: Simplify right side
    13,112.28x = 129,273,699.30
  5. Step 5: Solve for x
    x = 129,273,699.30/13,112.28
  6. Step 6: Final answer
    x = 9,858.98

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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.