Home / 19,662.31-27,133.93-11,278.75

Finding the Fourth Proportional to 19,662.31, 27,133.93 and 11,278.75

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Solution

The fourth proportional to 19,662.31, 27,133.93 and 11,278.75 is: 15,564.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,662.31 : 27,133.93 = 11,278.75 : x
  2. Step 2: Convert to fraction form
    19,662.31/27,133.93 = 11,278.75/x
  3. Step 3: Cross multiply
    19,662.31x = 27,133.93 × 11,278.75
  4. Step 4: Simplify right side
    19,662.31x = 306,036,812.99
  5. Step 5: Solve for x
    x = 306,036,812.99/19,662.31
  6. Step 6: Final answer
    x = 15,564.64

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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.