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Finding the Fourth Proportional to 11,470.70, 15,837.18 and 8,813.36

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Solution

The fourth proportional to 11,470.70, 15,837.18 and 8,813.36 is: 12,168.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,470.70 : 15,837.18 = 8,813.36 : x
  2. Step 2: Convert to fraction form
    11,470.70/15,837.18 = 8,813.36/x
  3. Step 3: Cross multiply
    11,470.70x = 15,837.18 × 8,813.36
  4. Step 4: Simplify right side
    11,470.70x = 139,578,768.72
  5. Step 5: Solve for x
    x = 139,578,768.72/11,470.70
  6. Step 6: Final answer
    x = 12,168.29

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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.