Home / 21,332.06-29,438.25-11,900.42

Finding the Fourth Proportional to 21,332.06, 29,438.25 and 11,900.42

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Solution

The fourth proportional to 21,332.06, 29,438.25 and 11,900.42 is: 16,422.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.06 : 29,438.25 = 11,900.42 : x
  2. Step 2: Convert to fraction form
    21,332.06/29,438.25 = 11,900.42/x
  3. Step 3: Cross multiply
    21,332.06x = 29,438.25 × 11,900.42
  4. Step 4: Simplify right side
    21,332.06x = 350,327,539.07
  5. Step 5: Solve for x
    x = 350,327,539.07/21,332.06
  6. Step 6: Final answer
    x = 16,422.58

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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.