Home / 39,027.12-53,856.96-21,121.70

Finding the Fourth Proportional to 39,027.12, 53,856.96 and 21,121.70

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Solution

The fourth proportional to 39,027.12, 53,856.96 and 21,121.70 is: 29,147.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,027.12 : 53,856.96 = 21,121.70 : x
  2. Step 2: Convert to fraction form
    39,027.12/53,856.96 = 21,121.70/x
  3. Step 3: Cross multiply
    39,027.12x = 53,856.96 × 21,121.70
  4. Step 4: Simplify right side
    39,027.12x = 1,137,550,552.03
  5. Step 5: Solve for x
    x = 1,137,550,552.03/39,027.12
  6. Step 6: Final answer
    x = 29,147.69

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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.