Home / 21,936.95-30,272.89-11,865.40

Finding the Fourth Proportional to 21,936.95, 30,272.89 and 11,865.40

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Solution

The fourth proportional to 21,936.95, 30,272.89 and 11,865.40 is: 16,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.95 : 30,272.89 = 11,865.40 : x
  2. Step 2: Convert to fraction form
    21,936.95/30,272.89 = 11,865.40/x
  3. Step 3: Cross multiply
    21,936.95x = 30,272.89 × 11,865.40
  4. Step 4: Simplify right side
    21,936.95x = 359,199,949.01
  5. Step 5: Solve for x
    x = 359,199,949.01/21,936.95
  6. Step 6: Final answer
    x = 16,374.20

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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.