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Finding the Fourth Proportional to 11,888.70, 17,828.01 and 6,340.86

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Solution

The fourth proportional to 11,888.70, 17,828.01 and 6,340.86 is: 9,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,888.70 : 17,828.01 = 6,340.86 : x
  2. Step 2: Convert to fraction form
    11,888.70/17,828.01 = 6,340.86/x
  3. Step 3: Cross multiply
    11,888.70x = 17,828.01 × 6,340.86
  4. Step 4: Simplify right side
    11,888.70x = 113,044,915.49
  5. Step 5: Solve for x
    x = 113,044,915.49/11,888.70
  6. Step 6: Final answer
    x = 9,508.60

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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.