Home / 28,290.06-42,435.09-8,570.61

Finding the Fourth Proportional to 28,290.06, 42,435.09 and 8,570.61

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Solution

The fourth proportional to 28,290.06, 42,435.09 and 8,570.61 is: 12,855.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.06 : 42,435.09 = 8,570.61 : x
  2. Step 2: Convert to fraction form
    28,290.06/42,435.09 = 8,570.61/x
  3. Step 3: Cross multiply
    28,290.06x = 42,435.09 × 8,570.61
  4. Step 4: Simplify right side
    28,290.06x = 363,694,606.70
  5. Step 5: Solve for x
    x = 363,694,606.70/28,290.06
  6. Step 6: Final answer
    x = 12,855.92

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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.