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Finding the Fourth Proportional to 28,549.54, 42,828.42 and 8,829.63

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Solution

The fourth proportional to 28,549.54, 42,828.42 and 8,829.63 is: 13,245.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,549.54 : 42,828.42 = 8,829.63 : x
  2. Step 2: Convert to fraction form
    28,549.54/42,828.42 = 8,829.63/x
  3. Step 3: Cross multiply
    28,549.54x = 42,828.42 × 8,829.63
  4. Step 4: Simplify right side
    28,549.54x = 378,159,230.82
  5. Step 5: Solve for x
    x = 378,159,230.82/28,549.54
  6. Step 6: Final answer
    x = 13,245.72

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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.