Home / 39,990.66-60,022.88-20,283.05

Finding the Fourth Proportional to 39,990.66, 60,022.88 and 20,283.05

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Solution

The fourth proportional to 39,990.66, 60,022.88 and 20,283.05 is: 30,443.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,990.66 : 60,022.88 = 20,283.05 : x
  2. Step 2: Convert to fraction form
    39,990.66/60,022.88 = 20,283.05/x
  3. Step 3: Cross multiply
    39,990.66x = 60,022.88 × 20,283.05
  4. Step 4: Simplify right side
    39,990.66x = 1,217,447,076.18
  5. Step 5: Solve for x
    x = 1,217,447,076.18/39,990.66
  6. Step 6: Final answer
    x = 30,443.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.