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Finding the Fourth Proportional to 11,900.18, 17,878.01 and 10,239.45

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Solution

The fourth proportional to 11,900.18, 17,878.01 and 10,239.45 is: 15,383.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,900.18 : 17,878.01 = 10,239.45 : x
  2. Step 2: Convert to fraction form
    11,900.18/17,878.01 = 10,239.45/x
  3. Step 3: Cross multiply
    11,900.18x = 17,878.01 × 10,239.45
  4. Step 4: Simplify right side
    11,900.18x = 183,060,989.49
  5. Step 5: Solve for x
    x = 183,060,989.49/11,900.18
  6. Step 6: Final answer
    x = 15,383.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.