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Finding the Fourth Proportional to 15,363.14, 21,201.52 and 8,649

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Solution

The fourth proportional to 15,363.14, 21,201.52 and 8,649 is: 11,935.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.14 : 21,201.52 = 8,649 : x
  2. Step 2: Convert to fraction form
    15,363.14/21,201.52 = 8,649/x
  3. Step 3: Cross multiply
    15,363.14x = 21,201.52 × 8,649
  4. Step 4: Simplify right side
    15,363.14x = 183,371,946.48
  5. Step 5: Solve for x
    x = 183,371,946.48/15,363.14
  6. Step 6: Final answer
    x = 11,935.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.