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Finding the Fourth Proportional to 18,903.92, 26,086.25 and 10,404.38

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Solution

The fourth proportional to 18,903.92, 26,086.25 and 10,404.38 is: 14,357.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903.92 : 26,086.25 = 10,404.38 : x
  2. Step 2: Convert to fraction form
    18,903.92/26,086.25 = 10,404.38/x
  3. Step 3: Cross multiply
    18,903.92x = 26,086.25 × 10,404.38
  4. Step 4: Simplify right side
    18,903.92x = 271,411,349.00
  5. Step 5: Solve for x
    x = 271,411,349.00/18,903.92
  6. Step 6: Final answer
    x = 14,357.41

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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.