Home / 39,642.40-54,705.90-21,737.56

Finding the Fourth Proportional to 39,642.40, 54,705.90 and 21,737.56

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Solution

The fourth proportional to 39,642.40, 54,705.90 and 21,737.56 is: 29,997.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,642.40 : 54,705.90 = 21,737.56 : x
  2. Step 2: Convert to fraction form
    39,642.40/54,705.90 = 21,737.56/x
  3. Step 3: Cross multiply
    39,642.40x = 54,705.90 × 21,737.56
  4. Step 4: Simplify right side
    39,642.40x = 1,189,172,783.60
  5. Step 5: Solve for x
    x = 1,189,172,783.60/39,642.40
  6. Step 6: Final answer
    x = 29,997.50

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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.