Home / 22,779.97-34,155.78-7,990.32

Finding the Fourth Proportional to 22,779.97, 34,155.78 and 7,990.32

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Solution

The fourth proportional to 22,779.97, 34,155.78 and 7,990.32 is: 11,980.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,779.97 : 34,155.78 = 7,990.32 : x
  2. Step 2: Convert to fraction form
    22,779.97/34,155.78 = 7,990.32/x
  3. Step 3: Cross multiply
    22,779.97x = 34,155.78 × 7,990.32
  4. Step 4: Simplify right side
    22,779.97x = 272,915,612.05
  5. Step 5: Solve for x
    x = 272,915,612.05/22,779.97
  6. Step 6: Final answer
    x = 11,980.51

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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.