Home / 31,388.75-43,326.08-18,644.01

Finding the Fourth Proportional to 31,388.75, 43,326.08 and 18,644.01

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Solution

The fourth proportional to 31,388.75, 43,326.08 and 18,644.01 is: 25,734.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,388.75 : 43,326.08 = 18,644.01 : x
  2. Step 2: Convert to fraction form
    31,388.75/43,326.08 = 18,644.01/x
  3. Step 3: Cross multiply
    31,388.75x = 43,326.08 × 18,644.01
  4. Step 4: Simplify right side
    31,388.75x = 807,771,775.56
  5. Step 5: Solve for x
    x = 807,771,775.56/31,388.75
  6. Step 6: Final answer
    x = 25,734.44

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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.