Home / 21,937.12-30,273.11-11,865.55

Finding the Fourth Proportional to 21,937.12, 30,273.11 and 11,865.55

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Solution

The fourth proportional to 21,937.12, 30,273.11 and 11,865.55 is: 16,374.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,937.12 : 30,273.11 = 11,865.55 : x
  2. Step 2: Convert to fraction form
    21,937.12/30,273.11 = 11,865.55/x
  3. Step 3: Cross multiply
    21,937.12x = 30,273.11 × 11,865.55
  4. Step 4: Simplify right side
    21,937.12x = 359,206,889.67
  5. Step 5: Solve for x
    x = 359,206,889.67/21,937.12
  6. Step 6: Final answer
    x = 16,374.39

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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.