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Finding the Fourth Proportional to 15,550.50, 21,460.14 and 8,836.50

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Solution

The fourth proportional to 15,550.50, 21,460.14 and 8,836.50 is: 12,194.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,550.50 : 21,460.14 = 8,836.50 : x
  2. Step 2: Convert to fraction form
    15,550.50/21,460.14 = 8,836.50/x
  3. Step 3: Cross multiply
    15,550.50x = 21,460.14 × 8,836.50
  4. Step 4: Simplify right side
    15,550.50x = 189,632,527.11
  5. Step 5: Solve for x
    x = 189,632,527.11/15,550.50
  6. Step 6: Final answer
    x = 12,194.63

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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.