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Finding the Fourth Proportional to 28,525.86, 42,792.89 and 8,806.11

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Solution

The fourth proportional to 28,525.86, 42,792.89 and 8,806.11 is: 13,210.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,525.86 : 42,792.89 = 8,806.11 : x
  2. Step 2: Convert to fraction form
    28,525.86/42,792.89 = 8,806.11/x
  3. Step 3: Cross multiply
    28,525.86x = 42,792.89 × 8,806.11
  4. Step 4: Simplify right side
    28,525.86x = 376,838,682.59
  5. Step 5: Solve for x
    x = 376,838,682.59/28,525.86
  6. Step 6: Final answer
    x = 13,210.42

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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.