Home / 27,615.30-38,109.60-15,679.02

Finding the Fourth Proportional to 27,615.30, 38,109.60 and 15,679.02

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Solution

The fourth proportional to 27,615.30, 38,109.60 and 15,679.02 is: 21,637.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,615.30 : 38,109.60 = 15,679.02 : x
  2. Step 2: Convert to fraction form
    27,615.30/38,109.60 = 15,679.02/x
  3. Step 3: Cross multiply
    27,615.30x = 38,109.60 × 15,679.02
  4. Step 4: Simplify right side
    27,615.30x = 597,521,180.59
  5. Step 5: Solve for x
    x = 597,521,180.59/27,615.30
  6. Step 6: Final answer
    x = 21,637.32

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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.