Home / 21,405.93-32,121.57-11,926.18

Finding the Fourth Proportional to 21,405.93, 32,121.57 and 11,926.18

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Solution

The fourth proportional to 21,405.93, 32,121.57 and 11,926.18 is: 17,896.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.93 : 32,121.57 = 11,926.18 : x
  2. Step 2: Convert to fraction form
    21,405.93/32,121.57 = 11,926.18/x
  3. Step 3: Cross multiply
    21,405.93x = 32,121.57 × 11,926.18
  4. Step 4: Simplify right side
    21,405.93x = 383,087,616.21
  5. Step 5: Solve for x
    x = 383,087,616.21/21,405.93
  6. Step 6: Final answer
    x = 17,896.33

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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.