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Finding the Fourth Proportional to 12,809.18, 19,102.02 and 11,393.30

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Solution

The fourth proportional to 12,809.18, 19,102.02 and 11,393.30 is: 16,990.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.18 : 19,102.02 = 11,393.30 : x
  2. Step 2: Convert to fraction form
    12,809.18/19,102.02 = 11,393.30/x
  3. Step 3: Cross multiply
    12,809.18x = 19,102.02 × 11,393.30
  4. Step 4: Simplify right side
    12,809.18x = 217,635,044.47
  5. Step 5: Solve for x
    x = 217,635,044.47/12,809.18
  6. Step 6: Final answer
    x = 16,990.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.