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Finding the Fourth Proportional to 18,857.21, 26,026.60 and 12,483.92

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Solution

The fourth proportional to 18,857.21, 26,026.60 and 12,483.92 is: 17,230.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.21 : 26,026.60 = 12,483.92 : x
  2. Step 2: Convert to fraction form
    18,857.21/26,026.60 = 12,483.92/x
  3. Step 3: Cross multiply
    18,857.21x = 26,026.60 × 12,483.92
  4. Step 4: Simplify right side
    18,857.21x = 324,913,830.93
  5. Step 5: Solve for x
    x = 324,913,830.93/18,857.21
  6. Step 6: Final answer
    x = 17,230.22

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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.