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Finding the Fourth Proportional to 28,569.71, 42,855.78 and 8,848.64

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Solution

The fourth proportional to 28,569.71, 42,855.78 and 8,848.64 is: 13,273.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.71 : 42,855.78 = 8,848.64 : x
  2. Step 2: Convert to fraction form
    28,569.71/42,855.78 = 8,848.64/x
  3. Step 3: Cross multiply
    28,569.71x = 42,855.78 × 8,848.64
  4. Step 4: Simplify right side
    28,569.71x = 379,215,509.46
  5. Step 5: Solve for x
    x = 379,215,509.46/28,569.71
  6. Step 6: Final answer
    x = 13,273.34

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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.