Home / 15,760.24-21,748.93-8,686.51

Finding the Fourth Proportional to 15,760.24, 21,748.93 and 8,686.51

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Solution

The fourth proportional to 15,760.24, 21,748.93 and 8,686.51 is: 11,987.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,760.24 : 21,748.93 = 8,686.51 : x
  2. Step 2: Convert to fraction form
    15,760.24/21,748.93 = 8,686.51/x
  3. Step 3: Cross multiply
    15,760.24x = 21,748.93 × 8,686.51
  4. Step 4: Simplify right side
    15,760.24x = 188,922,221.85
  5. Step 5: Solve for x
    x = 188,922,221.85/15,760.24
  6. Step 6: Final answer
    x = 11,987.27

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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.