Home / 13,246.38-18,280.35-7,278.37

Finding the Fourth Proportional to 13,246.38, 18,280.35 and 7,278.37

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Solution

The fourth proportional to 13,246.38, 18,280.35 and 7,278.37 is: 10,044.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,246.38 : 18,280.35 = 7,278.37 : x
  2. Step 2: Convert to fraction form
    13,246.38/18,280.35 = 7,278.37/x
  3. Step 3: Cross multiply
    13,246.38x = 18,280.35 × 7,278.37
  4. Step 4: Simplify right side
    13,246.38x = 133,051,105.33
  5. Step 5: Solve for x
    x = 133,051,105.33/13,246.38
  6. Step 6: Final answer
    x = 10,044.34

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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.