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Finding the Fourth Proportional to 18,905.23, 26,089.01 and 10,407.17

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Solution

The fourth proportional to 18,905.23, 26,089.01 and 10,407.17 is: 14,361.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.23 : 26,089.01 = 10,407.17 : x
  2. Step 2: Convert to fraction form
    18,905.23/26,089.01 = 10,407.17/x
  3. Step 3: Cross multiply
    18,905.23x = 26,089.01 × 10,407.17
  4. Step 4: Simplify right side
    18,905.23x = 271,512,814.42
  5. Step 5: Solve for x
    x = 271,512,814.42/18,905.23
  6. Step 6: Final answer
    x = 14,361.78

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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.