Home / 13,278.64-18,326.19-7,614.31

Finding the Fourth Proportional to 13,278.64, 18,326.19 and 7,614.31

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Solution

The fourth proportional to 13,278.64, 18,326.19 and 7,614.31 is: 10,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.64 : 18,326.19 = 7,614.31 : x
  2. Step 2: Convert to fraction form
    13,278.64/18,326.19 = 7,614.31/x
  3. Step 3: Cross multiply
    13,278.64x = 18,326.19 × 7,614.31
  4. Step 4: Simplify right side
    13,278.64x = 139,541,291.78
  5. Step 5: Solve for x
    x = 139,541,291.78/13,278.64
  6. Step 6: Final answer
    x = 10,508.70

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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.