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Finding the Fourth Proportional to 13,476.70, 20,215.05 and 8,811.10

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Solution

The fourth proportional to 13,476.70, 20,215.05 and 8,811.10 is: 13,216.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,476.70 : 20,215.05 = 8,811.10 : x
  2. Step 2: Convert to fraction form
    13,476.70/20,215.05 = 8,811.10/x
  3. Step 3: Cross multiply
    13,476.70x = 20,215.05 × 8,811.10
  4. Step 4: Simplify right side
    13,476.70x = 178,116,827.06
  5. Step 5: Solve for x
    x = 178,116,827.06/13,476.70
  6. Step 6: Final answer
    x = 13,216.65

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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.