Home / 31,262.08-43,141.32-16,921.60

Finding the Fourth Proportional to 31,262.08, 43,141.32 and 16,921.60

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Solution

The fourth proportional to 31,262.08, 43,141.32 and 16,921.60 is: 23,351.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,262.08 : 43,141.32 = 16,921.60 : x
  2. Step 2: Convert to fraction form
    31,262.08/43,141.32 = 16,921.60/x
  3. Step 3: Cross multiply
    31,262.08x = 43,141.32 × 16,921.60
  4. Step 4: Simplify right side
    31,262.08x = 730,020,160.51
  5. Step 5: Solve for x
    x = 730,020,160.51/31,262.08
  6. Step 6: Final answer
    x = 23,351.62

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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.