Home / 28,216.95-42,490.33-20,873.22

Finding the Fourth Proportional to 28,216.95, 42,490.33 and 20,873.22

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Solution

The fourth proportional to 28,216.95, 42,490.33 and 20,873.22 is: 31,431.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.95 : 42,490.33 = 20,873.22 : x
  2. Step 2: Convert to fraction form
    28,216.95/42,490.33 = 20,873.22/x
  3. Step 3: Cross multiply
    28,216.95x = 42,490.33 × 20,873.22
  4. Step 4: Simplify right side
    28,216.95x = 886,910,005.96
  5. Step 5: Solve for x
    x = 886,910,005.96/28,216.95
  6. Step 6: Final answer
    x = 31,431.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.