Home / 21,619.42-29,834.58-12,191.02

Finding the Fourth Proportional to 21,619.42, 29,834.58 and 12,191.02

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Solution

The fourth proportional to 21,619.42, 29,834.58 and 12,191.02 is: 16,823.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.42 : 29,834.58 = 12,191.02 : x
  2. Step 2: Convert to fraction form
    21,619.42/29,834.58 = 12,191.02/x
  3. Step 3: Cross multiply
    21,619.42x = 29,834.58 × 12,191.02
  4. Step 4: Simplify right side
    21,619.42x = 363,713,961.47
  5. Step 5: Solve for x
    x = 363,713,961.47/21,619.42
  6. Step 6: Final answer
    x = 16,823.48

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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.