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Finding the Fourth Proportional to 18,887.22, 26,063.08 and 10,820.90

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Solution

The fourth proportional to 18,887.22, 26,063.08 and 10,820.90 is: 14,932.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.22 : 26,063.08 = 10,820.90 : x
  2. Step 2: Convert to fraction form
    18,887.22/26,063.08 = 10,820.90/x
  3. Step 3: Cross multiply
    18,887.22x = 26,063.08 × 10,820.90
  4. Step 4: Simplify right side
    18,887.22x = 282,025,982.37
  5. Step 5: Solve for x
    x = 282,025,982.37/18,887.22
  6. Step 6: Final answer
    x = 14,932.11

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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.