Home / 28,411.82-42,610.89-8,690.55

Finding the Fourth Proportional to 28,411.82, 42,610.89 and 8,690.55

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Solution

The fourth proportional to 28,411.82, 42,610.89 and 8,690.55 is: 13,033.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,411.82 : 42,610.89 = 8,690.55 : x
  2. Step 2: Convert to fraction form
    28,411.82/42,610.89 = 8,690.55/x
  3. Step 3: Cross multiply
    28,411.82x = 42,610.89 × 8,690.55
  4. Step 4: Simplify right side
    28,411.82x = 370,312,070.09
  5. Step 5: Solve for x
    x = 370,312,070.09/28,411.82
  6. Step 6: Final answer
    x = 13,033.73

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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.