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Finding the Fourth Proportional to 28,545.90, 42,822.90 and 8,826.12

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Solution

The fourth proportional to 28,545.90, 42,822.90 and 8,826.12 is: 13,240.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,545.90 : 42,822.90 = 8,826.12 : x
  2. Step 2: Convert to fraction form
    28,545.90/42,822.90 = 8,826.12/x
  3. Step 3: Cross multiply
    28,545.90x = 42,822.90 × 8,826.12
  4. Step 4: Simplify right side
    28,545.90x = 377,960,054.15
  5. Step 5: Solve for x
    x = 377,960,054.15/28,545.90
  6. Step 6: Final answer
    x = 13,240.43

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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.