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Finding the Fourth Proportional to 18,903.66, 26,092.98 and 12,189.36

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Solution

The fourth proportional to 18,903.66, 26,092.98 and 12,189.36 is: 16,825.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903.66 : 26,092.98 = 12,189.36 : x
  2. Step 2: Convert to fraction form
    18,903.66/26,092.98 = 12,189.36/x
  3. Step 3: Cross multiply
    18,903.66x = 26,092.98 × 12,189.36
  4. Step 4: Simplify right side
    18,903.66x = 318,056,726.69
  5. Step 5: Solve for x
    x = 318,056,726.69/18,903.66
  6. Step 6: Final answer
    x = 16,825.14

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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.