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Finding the Fourth Proportional to 15,363.63, 21,201.50 and 8,649.11

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Solution

The fourth proportional to 15,363.63, 21,201.50 and 8,649.11 is: 11,935.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.63 : 21,201.50 = 8,649.11 : x
  2. Step 2: Convert to fraction form
    15,363.63/21,201.50 = 8,649.11/x
  3. Step 3: Cross multiply
    15,363.63x = 21,201.50 × 8,649.11
  4. Step 4: Simplify right side
    15,363.63x = 183,374,105.67
  5. Step 5: Solve for x
    x = 183,374,105.67/15,363.63
  6. Step 6: Final answer
    x = 11,935.60

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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.