Home / 28,190.22-42,268.90-10,661.41

Finding the Fourth Proportional to 28,190.22, 42,268.90 and 10,661.41

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Solution

The fourth proportional to 28,190.22, 42,268.90 and 10,661.41 is: 15,985.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190.22 : 42,268.90 = 10,661.41 : x
  2. Step 2: Convert to fraction form
    28,190.22/42,268.90 = 10,661.41/x
  3. Step 3: Cross multiply
    28,190.22x = 42,268.90 × 10,661.41
  4. Step 4: Simplify right side
    28,190.22x = 450,646,073.15
  5. Step 5: Solve for x
    x = 450,646,073.15/28,190.22
  6. Step 6: Final answer
    x = 15,985.90

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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.