Home / 15,691.23-21,639.44-10,662.96

Finding the Fourth Proportional to 15,691.23, 21,639.44 and 10,662.96

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Solution

The fourth proportional to 15,691.23, 21,639.44 and 10,662.96 is: 14,705.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,691.23 : 21,639.44 = 10,662.96 : x
  2. Step 2: Convert to fraction form
    15,691.23/21,639.44 = 10,662.96/x
  3. Step 3: Cross multiply
    15,691.23x = 21,639.44 × 10,662.96
  4. Step 4: Simplify right side
    15,691.23x = 230,740,429.83
  5. Step 5: Solve for x
    x = 230,740,429.83/15,691.23
  6. Step 6: Final answer
    x = 14,705.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.