Home / 39,238.32-54,149.58-21,333.72

Finding the Fourth Proportional to 39,238.32, 54,149.58 and 21,333.72

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Solution

The fourth proportional to 39,238.32, 54,149.58 and 21,333.72 is: 29,440.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,238.32 : 54,149.58 = 21,333.72 : x
  2. Step 2: Convert to fraction form
    39,238.32/54,149.58 = 21,333.72/x
  3. Step 3: Cross multiply
    39,238.32x = 54,149.58 × 21,333.72
  4. Step 4: Simplify right side
    39,238.32x = 1,155,211,977.84
  5. Step 5: Solve for x
    x = 1,155,211,977.84/39,238.32
  6. Step 6: Final answer
    x = 29,440.91

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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.