Home / 18,278.36-27,418.08-5,130.74

Finding the Fourth Proportional to 18,278.36, 27,418.08 and 5,130.74

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Solution

The fourth proportional to 18,278.36, 27,418.08 and 5,130.74 is: 7,696.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.36 : 27,418.08 = 5,130.74 : x
  2. Step 2: Convert to fraction form
    18,278.36/27,418.08 = 5,130.74/x
  3. Step 3: Cross multiply
    18,278.36x = 27,418.08 × 5,130.74
  4. Step 4: Simplify right side
    18,278.36x = 140,674,902.69
  5. Step 5: Solve for x
    x = 140,674,902.69/18,278.36
  6. Step 6: Final answer
    x = 7,696.26

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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.