Home / 13,979.16-19,287.38-9,725.45

Finding the Fourth Proportional to 13,979.16, 19,287.38 and 9,725.45

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Solution

The fourth proportional to 13,979.16, 19,287.38 and 9,725.45 is: 13,418.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.16 : 19,287.38 = 9,725.45 : x
  2. Step 2: Convert to fraction form
    13,979.16/19,287.38 = 9,725.45/x
  3. Step 3: Cross multiply
    13,979.16x = 19,287.38 × 9,725.45
  4. Step 4: Simplify right side
    13,979.16x = 187,578,304.76
  5. Step 5: Solve for x
    x = 187,578,304.76/13,979.16
  6. Step 6: Final answer
    x = 13,418.42

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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.