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Finding the Fourth Proportional to 28,525.76, 42,772.96 and 8,798.88

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Solution

The fourth proportional to 28,525.76, 42,772.96 and 8,798.88 is: 13,193.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,525.76 : 42,772.96 = 8,798.88 : x
  2. Step 2: Convert to fraction form
    28,525.76/42,772.96 = 8,798.88/x
  3. Step 3: Cross multiply
    28,525.76x = 42,772.96 × 8,798.88
  4. Step 4: Simplify right side
    28,525.76x = 376,354,142.28
  5. Step 5: Solve for x
    x = 376,354,142.28/28,525.76
  6. Step 6: Final answer
    x = 13,193.48

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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.