Home / 21,961.59-30,307.02-11,890.04

Finding the Fourth Proportional to 21,961.59, 30,307.02 and 11,890.04

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Solution

The fourth proportional to 21,961.59, 30,307.02 and 11,890.04 is: 16,408.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.59 : 30,307.02 = 11,890.04 : x
  2. Step 2: Convert to fraction form
    21,961.59/30,307.02 = 11,890.04/x
  3. Step 3: Cross multiply
    21,961.59x = 30,307.02 × 11,890.04
  4. Step 4: Simplify right side
    21,961.59x = 360,351,544.86
  5. Step 5: Solve for x
    x = 360,351,544.86/21,961.59
  6. Step 6: Final answer
    x = 16,408.26

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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.