Home / 28,515.75-42,779.31-8,793.56

Finding the Fourth Proportional to 28,515.75, 42,779.31 and 8,793.56

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Solution

The fourth proportional to 28,515.75, 42,779.31 and 8,793.56 is: 13,192.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.75 : 42,779.31 = 8,793.56 : x
  2. Step 2: Convert to fraction form
    28,515.75/42,779.31 = 8,793.56/x
  3. Step 3: Cross multiply
    28,515.75x = 42,779.31 × 8,793.56
  4. Step 4: Simplify right side
    28,515.75x = 376,182,577.41
  5. Step 5: Solve for x
    x = 376,182,577.41/28,515.75
  6. Step 6: Final answer
    x = 13,192.10

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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.