Home / 18,118.16-25,003.32-10,947.08

Finding the Fourth Proportional to 18,118.16, 25,003.32 and 10,947.08

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Solution

The fourth proportional to 18,118.16, 25,003.32 and 10,947.08 is: 15,107.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.16 : 25,003.32 = 10,947.08 : x
  2. Step 2: Convert to fraction form
    18,118.16/25,003.32 = 10,947.08/x
  3. Step 3: Cross multiply
    18,118.16x = 25,003.32 × 10,947.08
  4. Step 4: Simplify right side
    18,118.16x = 273,713,164.55
  5. Step 5: Solve for x
    x = 273,713,164.55/18,118.16
  6. Step 6: Final answer
    x = 15,107.12

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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.