Home / 21,756.25-30,024.84-12,327.85

Finding the Fourth Proportional to 21,756.25, 30,024.84 and 12,327.85

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Solution

The fourth proportional to 21,756.25, 30,024.84 and 12,327.85 is: 17,013.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.25 : 30,024.84 = 12,327.85 : x
  2. Step 2: Convert to fraction form
    21,756.25/30,024.84 = 12,327.85/x
  3. Step 3: Cross multiply
    21,756.25x = 30,024.84 × 12,327.85
  4. Step 4: Simplify right side
    21,756.25x = 370,141,723.79
  5. Step 5: Solve for x
    x = 370,141,723.79/21,756.25
  6. Step 6: Final answer
    x = 17,013.12

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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.