Home / 15,521.90-21,411.14-11,268

Finding the Fourth Proportional to 15,521.90, 21,411.14 and 11,268

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Solution

The fourth proportional to 15,521.90, 21,411.14 and 11,268 is: 15,543.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521.90 : 21,411.14 = 11,268 : x
  2. Step 2: Convert to fraction form
    15,521.90/21,411.14 = 11,268/x
  3. Step 3: Cross multiply
    15,521.90x = 21,411.14 × 11,268
  4. Step 4: Simplify right side
    15,521.90x = 241,260,669.18
  5. Step 5: Solve for x
    x = 241,260,669.18/15,521.90
  6. Step 6: Final answer
    x = 15,543.25

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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.