Home / 39,783.44-54,900-22,787.12

Finding the Fourth Proportional to 39,783.44, 54,900 and 22,787.12

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Solution

The fourth proportional to 39,783.44, 54,900 and 22,787.12 is: 31,445.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,783.44 : 54,900 = 22,787.12 : x
  2. Step 2: Convert to fraction form
    39,783.44/54,900 = 22,787.12/x
  3. Step 3: Cross multiply
    39,783.44x = 54,900 × 22,787.12
  4. Step 4: Simplify right side
    39,783.44x = 1,251,012,888
  5. Step 5: Solve for x
    x = 1,251,012,888/39,783.44
  6. Step 6: Final answer
    x = 31,445.57

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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.