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Finding the Fourth Proportional to 12,340.61, 17,012.32 and 8,797.67

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Solution

The fourth proportional to 12,340.61, 17,012.32 and 8,797.67 is: 12,128.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.61 : 17,012.32 = 8,797.67 : x
  2. Step 2: Convert to fraction form
    12,340.61/17,012.32 = 8,797.67/x
  3. Step 3: Cross multiply
    12,340.61x = 17,012.32 × 8,797.67
  4. Step 4: Simplify right side
    12,340.61x = 149,668,777.29
  5. Step 5: Solve for x
    x = 149,668,777.29/12,340.61
  6. Step 6: Final answer
    x = 12,128.15

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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.