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Finding the Fourth Proportional to 12,339.61, 17,010.95 and 8,796.67

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Solution

The fourth proportional to 12,339.61, 17,010.95 and 8,796.67 is: 12,126.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.61 : 17,010.95 = 8,796.67 : x
  2. Step 2: Convert to fraction form
    12,339.61/17,010.95 = 8,796.67/x
  3. Step 3: Cross multiply
    12,339.61x = 17,010.95 × 8,796.67
  4. Step 4: Simplify right side
    12,339.61x = 149,639,627.03
  5. Step 5: Solve for x
    x = 149,639,627.03/12,339.61
  6. Step 6: Final answer
    x = 12,126.77

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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.