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Finding the Fourth Proportional to 18,892.65, 26,071.31 and 10,278.56

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Solution

The fourth proportional to 18,892.65, 26,071.31 and 10,278.56 is: 14,184.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.65 : 26,071.31 = 10,278.56 : x
  2. Step 2: Convert to fraction form
    18,892.65/26,071.31 = 10,278.56/x
  3. Step 3: Cross multiply
    18,892.65x = 26,071.31 × 10,278.56
  4. Step 4: Simplify right side
    18,892.65x = 267,975,342.36
  5. Step 5: Solve for x
    x = 267,975,342.36/18,892.65
  6. Step 6: Final answer
    x = 14,184.11

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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.