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Finding the Fourth Proportional to 12,409.61, 18,618.05 and 5,010.26

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Solution

The fourth proportional to 12,409.61, 18,618.05 and 5,010.26 is: 7,516.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409.61 : 18,618.05 = 5,010.26 : x
  2. Step 2: Convert to fraction form
    12,409.61/18,618.05 = 5,010.26/x
  3. Step 3: Cross multiply
    12,409.61x = 18,618.05 × 5,010.26
  4. Step 4: Simplify right side
    12,409.61x = 93,281,190.63
  5. Step 5: Solve for x
    x = 93,281,190.63/12,409.61
  6. Step 6: Final answer
    x = 7,516.85

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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.