Home / 13,112.16-18,095.16-7,144.08

Finding the Fourth Proportional to 13,112.16, 18,095.16 and 7,144.08

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Solution

The fourth proportional to 13,112.16, 18,095.16 and 7,144.08 is: 9,859.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.16 : 18,095.16 = 7,144.08 : x
  2. Step 2: Convert to fraction form
    13,112.16/18,095.16 = 7,144.08/x
  3. Step 3: Cross multiply
    13,112.16x = 18,095.16 × 7,144.08
  4. Step 4: Simplify right side
    13,112.16x = 129,273,270.65
  5. Step 5: Solve for x
    x = 129,273,270.65/13,112.16
  6. Step 6: Final answer
    x = 9,859.04

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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.