Home / 13,892.19-19,167.62-7,921.68

Finding the Fourth Proportional to 13,892.19, 19,167.62 and 7,921.68

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Solution

The fourth proportional to 13,892.19, 19,167.62 and 7,921.68 is: 10,929.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892.19 : 19,167.62 = 7,921.68 : x
  2. Step 2: Convert to fraction form
    13,892.19/19,167.62 = 7,921.68/x
  3. Step 3: Cross multiply
    13,892.19x = 19,167.62 × 7,921.68
  4. Step 4: Simplify right side
    13,892.19x = 151,839,712.39
  5. Step 5: Solve for x
    x = 151,839,712.39/13,892.19
  6. Step 6: Final answer
    x = 10,929.86

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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.