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Finding the Fourth Proportional to 12,892.68, 19,356.84 and 6,657.84

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Solution

The fourth proportional to 12,892.68, 19,356.84 and 6,657.84 is: 9,995.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,892.68 : 19,356.84 = 6,657.84 : x
  2. Step 2: Convert to fraction form
    12,892.68/19,356.84 = 6,657.84/x
  3. Step 3: Cross multiply
    12,892.68x = 19,356.84 × 6,657.84
  4. Step 4: Simplify right side
    12,892.68x = 128,874,743.63
  5. Step 5: Solve for x
    x = 128,874,743.63/12,892.68
  6. Step 6: Final answer
    x = 9,995.96

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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.