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Finding the Fourth Proportional to 15,359.92, 22,920.09 and 13,705.09

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Solution

The fourth proportional to 15,359.92, 22,920.09 and 13,705.09 is: 20,450.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.92 : 22,920.09 = 13,705.09 : x
  2. Step 2: Convert to fraction form
    15,359.92/22,920.09 = 13,705.09/x
  3. Step 3: Cross multiply
    15,359.92x = 22,920.09 × 13,705.09
  4. Step 4: Simplify right side
    15,359.92x = 314,121,896.26
  5. Step 5: Solve for x
    x = 314,121,896.26/15,359.92
  6. Step 6: Final answer
    x = 20,450.75

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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.