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Finding the Fourth Proportional to 13,892.93, 19,172.05 and 7,924.69

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Solution

The fourth proportional to 13,892.93, 19,172.05 and 7,924.69 is: 10,935.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892.93 : 19,172.05 = 7,924.69 : x
  2. Step 2: Convert to fraction form
    13,892.93/19,172.05 = 7,924.69/x
  3. Step 3: Cross multiply
    13,892.93x = 19,172.05 × 7,924.69
  4. Step 4: Simplify right side
    13,892.93x = 151,932,557.07
  5. Step 5: Solve for x
    x = 151,932,557.07/13,892.93
  6. Step 6: Final answer
    x = 10,935.96

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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.