Home / 13,693.54-18,897.24-7,725.28

Finding the Fourth Proportional to 13,693.54, 18,897.24 and 7,725.28

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Solution

The fourth proportional to 13,693.54, 18,897.24 and 7,725.28 is: 10,660.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.54 : 18,897.24 = 7,725.28 : x
  2. Step 2: Convert to fraction form
    13,693.54/18,897.24 = 7,725.28/x
  3. Step 3: Cross multiply
    13,693.54x = 18,897.24 × 7,725.28
  4. Step 4: Simplify right side
    13,693.54x = 145,986,470.23
  5. Step 5: Solve for x
    x = 145,986,470.23/13,693.54
  6. Step 6: Final answer
    x = 10,660.97

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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.