Home / 39,737.72-54,838.40-21,833.12

Finding the Fourth Proportional to 39,737.72, 54,838.40 and 21,833.12

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Solution

The fourth proportional to 39,737.72, 54,838.40 and 21,833.12 is: 30,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,737.72 : 54,838.40 = 21,833.12 : x
  2. Step 2: Convert to fraction form
    39,737.72/54,838.40 = 21,833.12/x
  3. Step 3: Cross multiply
    39,737.72x = 54,838.40 × 21,833.12
  4. Step 4: Simplify right side
    39,737.72x = 1,197,293,367.81
  5. Step 5: Solve for x
    x = 1,197,293,367.81/39,737.72
  6. Step 6: Final answer
    x = 30,129.90

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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.