Home / 13,753.29-18,979.49-7,784.97

Finding the Fourth Proportional to 13,753.29, 18,979.49 and 7,784.97

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Solution

The fourth proportional to 13,753.29, 18,979.49 and 7,784.97 is: 10,743.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,753.29 : 18,979.49 = 7,784.97 : x
  2. Step 2: Convert to fraction form
    13,753.29/18,979.49 = 7,784.97/x
  3. Step 3: Cross multiply
    13,753.29x = 18,979.49 × 7,784.97
  4. Step 4: Simplify right side
    13,753.29x = 147,754,721.34
  5. Step 5: Solve for x
    x = 147,754,721.34/13,753.29
  6. Step 6: Final answer
    x = 10,743.23

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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.