Home / 18,278.43-27,419.36-5,130.75

Finding the Fourth Proportional to 18,278.43, 27,419.36 and 5,130.75

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Solution

The fourth proportional to 18,278.43, 27,419.36 and 5,130.75 is: 7,696.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.43 : 27,419.36 = 5,130.75 : x
  2. Step 2: Convert to fraction form
    18,278.43/27,419.36 = 5,130.75/x
  3. Step 3: Cross multiply
    18,278.43x = 27,419.36 × 5,130.75
  4. Step 4: Simplify right side
    18,278.43x = 140,681,881.32
  5. Step 5: Solve for x
    x = 140,681,881.32/18,278.43
  6. Step 6: Final answer
    x = 7,696.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.