Home / 21,642.15-32,475.47-11,782.11

Finding the Fourth Proportional to 21,642.15, 32,475.47 and 11,782.11

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Solution

The fourth proportional to 21,642.15, 32,475.47 and 11,782.11 is: 17,679.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,642.15 : 32,475.47 = 11,782.11 : x
  2. Step 2: Convert to fraction form
    21,642.15/32,475.47 = 11,782.11/x
  3. Step 3: Cross multiply
    21,642.15x = 32,475.47 × 11,782.11
  4. Step 4: Simplify right side
    21,642.15x = 382,629,500.93
  5. Step 5: Solve for x
    x = 382,629,500.93/21,642.15
  6. Step 6: Final answer
    x = 17,679.83

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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.