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Finding the Fourth Proportional to 18,220.71, 27,337.74 and 7,693.41

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Solution

The fourth proportional to 18,220.71, 27,337.74 and 7,693.41 is: 11,542.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.71 : 27,337.74 = 7,693.41 : x
  2. Step 2: Convert to fraction form
    18,220.71/27,337.74 = 7,693.41/x
  3. Step 3: Cross multiply
    18,220.71x = 27,337.74 × 7,693.41
  4. Step 4: Simplify right side
    18,220.71x = 210,320,442.29
  5. Step 5: Solve for x
    x = 210,320,442.29/18,220.71
  6. Step 6: Final answer
    x = 11,542.93

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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.