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Finding the Fourth Proportional to 12,319.76, 16,998.76 and 7,281.47

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Solution

The fourth proportional to 12,319.76, 16,998.76 and 7,281.47 is: 10,046.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.76 : 16,998.76 = 7,281.47 : x
  2. Step 2: Convert to fraction form
    12,319.76/16,998.76 = 7,281.47/x
  3. Step 3: Cross multiply
    12,319.76x = 16,998.76 × 7,281.47
  4. Step 4: Simplify right side
    12,319.76x = 123,775,960.98
  5. Step 5: Solve for x
    x = 123,775,960.98/12,319.76
  6. Step 6: Final answer
    x = 10,046.95

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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.