Home / 28,370.15-42,553.69-8,647.17

Finding the Fourth Proportional to 28,370.15, 42,553.69 and 8,647.17

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Solution

The fourth proportional to 28,370.15, 42,553.69 and 8,647.17 is: 12,970.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.15 : 42,553.69 = 8,647.17 : x
  2. Step 2: Convert to fraction form
    28,370.15/42,553.69 = 8,647.17/x
  3. Step 3: Cross multiply
    28,370.15x = 42,553.69 × 8,647.17
  4. Step 4: Simplify right side
    28,370.15x = 367,969,049.73
  5. Step 5: Solve for x
    x = 367,969,049.73/28,370.15
  6. Step 6: Final answer
    x = 12,970.29

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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.