Home / 39,900.60-55,060.62-21,995.58

Finding the Fourth Proportional to 39,900.60, 55,060.62 and 21,995.58

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Solution

The fourth proportional to 39,900.60, 55,060.62 and 21,995.58 is: 30,352.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,900.60 : 55,060.62 = 21,995.58 : x
  2. Step 2: Convert to fraction form
    39,900.60/55,060.62 = 21,995.58/x
  3. Step 3: Cross multiply
    39,900.60x = 55,060.62 × 21,995.58
  4. Step 4: Simplify right side
    39,900.60x = 1,211,090,272.06
  5. Step 5: Solve for x
    x = 1,211,090,272.06/39,900.60
  6. Step 6: Final answer
    x = 30,352.68

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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.