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Finding the Fourth Proportional to 11,323.76, 16,945.48 and 8,355.16

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Solution

The fourth proportional to 11,323.76, 16,945.48 and 8,355.16 is: 12,503.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,323.76 : 16,945.48 = 8,355.16 : x
  2. Step 2: Convert to fraction form
    11,323.76/16,945.48 = 8,355.16/x
  3. Step 3: Cross multiply
    11,323.76x = 16,945.48 × 8,355.16
  4. Step 4: Simplify right side
    11,323.76x = 141,582,196.68
  5. Step 5: Solve for x
    x = 141,582,196.68/11,323.76
  6. Step 6: Final answer
    x = 12,503.11

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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.