Home / 39,700.96-54,787.17-21,795.56

Finding the Fourth Proportional to 39,700.96, 54,787.17 and 21,795.56

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Solution

The fourth proportional to 39,700.96, 54,787.17 and 21,795.56 is: 30,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,700.96 : 54,787.17 = 21,795.56 : x
  2. Step 2: Convert to fraction form
    39,700.96/54,787.17 = 21,795.56/x
  3. Step 3: Cross multiply
    39,700.96x = 54,787.17 × 21,795.56
  4. Step 4: Simplify right side
    39,700.96x = 1,194,117,050.97
  5. Step 5: Solve for x
    x = 1,194,117,050.97/39,700.96
  6. Step 6: Final answer
    x = 30,077.79

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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.