Home / 13,860.48-19,126.62-7,892.40

Finding the Fourth Proportional to 13,860.48, 19,126.62 and 7,892.40

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Solution

The fourth proportional to 13,860.48, 19,126.62 and 7,892.40 is: 10,891.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.48 : 19,126.62 = 7,892.40 : x
  2. Step 2: Convert to fraction form
    13,860.48/19,126.62 = 7,892.40/x
  3. Step 3: Cross multiply
    13,860.48x = 19,126.62 × 7,892.40
  4. Step 4: Simplify right side
    13,860.48x = 150,954,935.69
  5. Step 5: Solve for x
    x = 150,954,935.69/13,860.48
  6. Step 6: Final answer
    x = 10,891.03

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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.