Home / 28,290.46-42,435.92-8,570.56

Finding the Fourth Proportional to 28,290.46, 42,435.92 and 8,570.56

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Solution

The fourth proportional to 28,290.46, 42,435.92 and 8,570.56 is: 12,855.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.46 : 42,435.92 = 8,570.56 : x
  2. Step 2: Convert to fraction form
    28,290.46/42,435.92 = 8,570.56/x
  3. Step 3: Cross multiply
    28,290.46x = 42,435.92 × 8,570.56
  4. Step 4: Simplify right side
    28,290.46x = 363,699,598.52
  5. Step 5: Solve for x
    x = 363,699,598.52/28,290.46
  6. Step 6: Final answer
    x = 12,855.91

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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.