Home / 27,982.79-38,616.18-15,407.54

Finding the Fourth Proportional to 27,982.79, 38,616.18 and 15,407.54

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Solution

The fourth proportional to 27,982.79, 38,616.18 and 15,407.54 is: 21,262.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,982.79 : 38,616.18 = 15,407.54 : x
  2. Step 2: Convert to fraction form
    27,982.79/38,616.18 = 15,407.54/x
  3. Step 3: Cross multiply
    27,982.79x = 38,616.18 × 15,407.54
  4. Step 4: Simplify right side
    27,982.79x = 594,980,338.00
  5. Step 5: Solve for x
    x = 594,980,338.00/27,982.79
  6. Step 6: Final answer
    x = 21,262.37

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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.