Home / 31,388.80-43,313.79-18,641.02

Finding the Fourth Proportional to 31,388.80, 43,313.79 and 18,641.02

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Solution

The fourth proportional to 31,388.80, 43,313.79 and 18,641.02 is: 25,722.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,388.80 : 43,313.79 = 18,641.02 : x
  2. Step 2: Convert to fraction form
    31,388.80/43,313.79 = 18,641.02/x
  3. Step 3: Cross multiply
    31,388.80x = 43,313.79 × 18,641.02
  4. Step 4: Simplify right side
    31,388.80x = 807,413,225.67
  5. Step 5: Solve for x
    x = 807,413,225.67/31,388.80
  6. Step 6: Final answer
    x = 25,722.97

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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.