Home / 39,643.76-54,709.14-21,737.70

Finding the Fourth Proportional to 39,643.76, 54,709.14 and 21,737.70

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Solution

The fourth proportional to 39,643.76, 54,709.14 and 21,737.70 is: 29,998.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,643.76 : 54,709.14 = 21,737.70 : x
  2. Step 2: Convert to fraction form
    39,643.76/54,709.14 = 21,737.70/x
  3. Step 3: Cross multiply
    39,643.76x = 54,709.14 × 21,737.70
  4. Step 4: Simplify right side
    39,643.76x = 1,189,250,872.58
  5. Step 5: Solve for x
    x = 1,189,250,872.58/39,643.76
  6. Step 6: Final answer
    x = 29,998.44

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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.