Home / 13,278.30-18,324.06-7,310.20

Finding the Fourth Proportional to 13,278.30, 18,324.06 and 7,310.20

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Solution

The fourth proportional to 13,278.30, 18,324.06 and 7,310.20 is: 10,088.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.30 : 18,324.06 = 7,310.20 : x
  2. Step 2: Convert to fraction form
    13,278.30/18,324.06 = 7,310.20/x
  3. Step 3: Cross multiply
    13,278.30x = 18,324.06 × 7,310.20
  4. Step 4: Simplify right side
    13,278.30x = 133,952,543.41
  5. Step 5: Solve for x
    x = 133,952,543.41/13,278.30
  6. Step 6: Final answer
    x = 10,088.08

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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.