Home / 21,218.63-29,282.65-11,787.19

Finding the Fourth Proportional to 21,218.63, 29,282.65 and 11,787.19

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Solution

The fourth proportional to 21,218.63, 29,282.65 and 11,787.19 is: 16,266.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.63 : 29,282.65 = 11,787.19 : x
  2. Step 2: Convert to fraction form
    21,218.63/29,282.65 = 11,787.19/x
  3. Step 3: Cross multiply
    21,218.63x = 29,282.65 × 11,787.19
  4. Step 4: Simplify right side
    21,218.63x = 345,160,056.58
  5. Step 5: Solve for x
    x = 345,160,056.58/21,218.63
  6. Step 6: Final answer
    x = 16,266.84

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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.