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Finding the Fourth Proportional to 15,166.07, 20,928.95 and 8,451.98

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Solution

The fourth proportional to 15,166.07, 20,928.95 and 8,451.98 is: 11,663.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,166.07 : 20,928.95 = 8,451.98 : x
  2. Step 2: Convert to fraction form
    15,166.07/20,928.95 = 8,451.98/x
  3. Step 3: Cross multiply
    15,166.07x = 20,928.95 × 8,451.98
  4. Step 4: Simplify right side
    15,166.07x = 176,891,066.82
  5. Step 5: Solve for x
    x = 176,891,066.82/15,166.07
  6. Step 6: Final answer
    x = 11,663.61

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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.