Home / 39,898.54-55,057.48-21,993.70

Finding the Fourth Proportional to 39,898.54, 55,057.48 and 21,993.70

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Solution

The fourth proportional to 39,898.54, 55,057.48 and 21,993.70 is: 30,349.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,898.54 : 55,057.48 = 21,993.70 : x
  2. Step 2: Convert to fraction form
    39,898.54/55,057.48 = 21,993.70/x
  3. Step 3: Cross multiply
    39,898.54x = 55,057.48 × 21,993.70
  4. Step 4: Simplify right side
    39,898.54x = 1,210,917,697.88
  5. Step 5: Solve for x
    x = 1,210,917,697.88/39,898.54
  6. Step 6: Final answer
    x = 30,349.93

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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.