Home / 19,521.78-26,940.42-11,561.10

Finding the Fourth Proportional to 19,521.78, 26,940.42 and 11,561.10

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Solution

The fourth proportional to 19,521.78, 26,940.42 and 11,561.10 is: 15,954.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,521.78 : 26,940.42 = 11,561.10 : x
  2. Step 2: Convert to fraction form
    19,521.78/26,940.42 = 11,561.10/x
  3. Step 3: Cross multiply
    19,521.78x = 26,940.42 × 11,561.10
  4. Step 4: Simplify right side
    19,521.78x = 311,460,889.66
  5. Step 5: Solve for x
    x = 311,460,889.66/19,521.78
  6. Step 6: Final answer
    x = 15,954.53

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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.