Home / 21,219-29,283.17-11,787.54

Finding the Fourth Proportional to 21,219, 29,283.17 and 11,787.54

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Solution

The fourth proportional to 21,219, 29,283.17 and 11,787.54 is: 16,267.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219 : 29,283.17 = 11,787.54 : x
  2. Step 2: Convert to fraction form
    21,219/29,283.17 = 11,787.54/x
  3. Step 3: Cross multiply
    21,219x = 29,283.17 × 11,787.54
  4. Step 4: Simplify right side
    21,219x = 345,176,478.76
  5. Step 5: Solve for x
    x = 345,176,478.76/21,219
  6. Step 6: Final answer
    x = 16,267.33

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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.