Home / 27,982.08-38,615.76-15,406.56

Finding the Fourth Proportional to 27,982.08, 38,615.76 and 15,406.56

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Solution

The fourth proportional to 27,982.08, 38,615.76 and 15,406.56 is: 21,261.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,982.08 : 38,615.76 = 15,406.56 : x
  2. Step 2: Convert to fraction form
    27,982.08/38,615.76 = 15,406.56/x
  3. Step 3: Cross multiply
    27,982.08x = 38,615.76 × 15,406.56
  4. Step 4: Simplify right side
    27,982.08x = 594,936,023.39
  5. Step 5: Solve for x
    x = 594,936,023.39/27,982.08
  6. Step 6: Final answer
    x = 21,261.32

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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.