Home / 10,821.44-14,931.24-6,221.12

Finding the Fourth Proportional to 10,821.44, 14,931.24 and 6,221.12

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Solution

The fourth proportional to 10,821.44, 14,931.24 and 6,221.12 is: 8,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.44 : 14,931.24 = 6,221.12 : x
  2. Step 2: Convert to fraction form
    10,821.44/14,931.24 = 6,221.12/x
  3. Step 3: Cross multiply
    10,821.44x = 14,931.24 × 6,221.12
  4. Step 4: Simplify right side
    10,821.44x = 92,889,035.79
  5. Step 5: Solve for x
    x = 92,889,035.79/10,821.44
  6. Step 6: Final answer
    x = 8,583.80

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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.