Home / 21,787.56-30,066.48-12,227.52

Finding the Fourth Proportional to 21,787.56, 30,066.48 and 12,227.52

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Solution

The fourth proportional to 21,787.56, 30,066.48 and 12,227.52 is: 16,873.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.56 : 30,066.48 = 12,227.52 : x
  2. Step 2: Convert to fraction form
    21,787.56/30,066.48 = 12,227.52/x
  3. Step 3: Cross multiply
    21,787.56x = 30,066.48 × 12,227.52
  4. Step 4: Simplify right side
    21,787.56x = 367,638,485.53
  5. Step 5: Solve for x
    x = 367,638,485.53/21,787.56
  6. Step 6: Final answer
    x = 16,873.78

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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.