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Finding the Fourth Proportional to 21,756.32, 30,025.84 and 12,197.84

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Solution

The fourth proportional to 21,756.32, 30,025.84 and 12,197.84 is: 16,834.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.32 : 30,025.84 = 12,197.84 : x
  2. Step 2: Convert to fraction form
    21,756.32/30,025.84 = 12,197.84/x
  3. Step 3: Cross multiply
    21,756.32x = 30,025.84 × 12,197.84
  4. Step 4: Simplify right side
    21,756.32x = 366,250,392.19
  5. Step 5: Solve for x
    x = 366,250,392.19/21,756.32
  6. Step 6: Final answer
    x = 16,834.21

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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.