Home / 39,639.76-54,703.61-21,733.69

Finding the Fourth Proportional to 39,639.76, 54,703.61 and 21,733.69

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Solution

The fourth proportional to 39,639.76, 54,703.61 and 21,733.69 is: 29,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,639.76 : 54,703.61 = 21,733.69 : x
  2. Step 2: Convert to fraction form
    39,639.76/54,703.61 = 21,733.69/x
  3. Step 3: Cross multiply
    39,639.76x = 54,703.61 × 21,733.69
  4. Step 4: Simplify right side
    39,639.76x = 1,188,911,301.62
  5. Step 5: Solve for x
    x = 1,188,911,301.62/39,639.76
  6. Step 6: Final answer
    x = 29,992.90

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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.