Home / 27,723.63-38,254.19-15,787.20

Finding the Fourth Proportional to 27,723.63, 38,254.19 and 15,787.20

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Solution

The fourth proportional to 27,723.63, 38,254.19 and 15,787.20 is: 21,783.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,723.63 : 38,254.19 = 15,787.20 : x
  2. Step 2: Convert to fraction form
    27,723.63/38,254.19 = 15,787.20/x
  3. Step 3: Cross multiply
    27,723.63x = 38,254.19 × 15,787.20
  4. Step 4: Simplify right side
    27,723.63x = 603,926,469.43
  5. Step 5: Solve for x
    x = 603,926,469.43/27,723.63
  6. Step 6: Final answer
    x = 21,783.82

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Double scale
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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.