Home / 39,987.54-55,175.58-22,987.80

Finding the Fourth Proportional to 39,987.54, 55,175.58 and 22,987.80

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Solution

The fourth proportional to 39,987.54, 55,175.58 and 22,987.80 is: 31,719.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,987.54 : 55,175.58 = 22,987.80 : x
  2. Step 2: Convert to fraction form
    39,987.54/55,175.58 = 22,987.80/x
  3. Step 3: Cross multiply
    39,987.54x = 55,175.58 × 22,987.80
  4. Step 4: Simplify right side
    39,987.54x = 1,268,365,197.92
  5. Step 5: Solve for x
    x = 1,268,365,197.92/39,987.54
  6. Step 6: Final answer
    x = 31,719.01

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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.