Home / 10,659.20-15,987.36-2,868.48

Finding the Fourth Proportional to 10,659.20, 15,987.36 and 2,868.48

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Solution

The fourth proportional to 10,659.20, 15,987.36 and 2,868.48 is: 4,302.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,659.20 : 15,987.36 = 2,868.48 : x
  2. Step 2: Convert to fraction form
    10,659.20/15,987.36 = 2,868.48/x
  3. Step 3: Cross multiply
    10,659.20x = 15,987.36 × 2,868.48
  4. Step 4: Simplify right side
    10,659.20x = 45,859,422.41
  5. Step 5: Solve for x
    x = 45,859,422.41/10,659.20
  6. Step 6: Final answer
    x = 4,302.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.