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Finding the Fourth Proportional to 11,392.70, 17,089.05 and 10,955.30

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Solution

The fourth proportional to 11,392.70, 17,089.05 and 10,955.30 is: 16,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,392.70 : 17,089.05 = 10,955.30 : x
  2. Step 2: Convert to fraction form
    11,392.70/17,089.05 = 10,955.30/x
  3. Step 3: Cross multiply
    11,392.70x = 17,089.05 × 10,955.30
  4. Step 4: Simplify right side
    11,392.70x = 187,215,669.47
  5. Step 5: Solve for x
    x = 187,215,669.47/11,392.70
  6. Step 6: Final answer
    x = 16,432.95

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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.