Home / 13,354.30-18,428.52-7,979.08

Finding the Fourth Proportional to 13,354.30, 18,428.52 and 7,979.08

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Solution

The fourth proportional to 13,354.30, 18,428.52 and 7,979.08 is: 11,010.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.30 : 18,428.52 = 7,979.08 : x
  2. Step 2: Convert to fraction form
    13,354.30/18,428.52 = 7,979.08/x
  3. Step 3: Cross multiply
    13,354.30x = 18,428.52 × 7,979.08
  4. Step 4: Simplify right side
    13,354.30x = 147,042,635.36
  5. Step 5: Solve for x
    x = 147,042,635.36/13,354.30
  6. Step 6: Final answer
    x = 11,010.88

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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.