Home / 11,821.50-17,729.55-4,426.74

Finding the Fourth Proportional to 11,821.50, 17,729.55 and 4,426.74

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Solution

The fourth proportional to 11,821.50, 17,729.55 and 4,426.74 is: 6,639.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.50 : 17,729.55 = 4,426.74 : x
  2. Step 2: Convert to fraction form
    11,821.50/17,729.55 = 4,426.74/x
  3. Step 3: Cross multiply
    11,821.50x = 17,729.55 × 4,426.74
  4. Step 4: Simplify right side
    11,821.50x = 78,484,108.17
  5. Step 5: Solve for x
    x = 78,484,108.17/11,821.50
  6. Step 6: Final answer
    x = 6,639.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.