Home / 31,719.07-43,776.98-18,287.70

Finding the Fourth Proportional to 31,719.07, 43,776.98 and 18,287.70

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Solution

The fourth proportional to 31,719.07, 43,776.98 and 18,287.70 is: 25,239.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,719.07 : 43,776.98 = 18,287.70 : x
  2. Step 2: Convert to fraction form
    31,719.07/43,776.98 = 18,287.70/x
  3. Step 3: Cross multiply
    31,719.07x = 43,776.98 × 18,287.70
  4. Step 4: Simplify right side
    31,719.07x = 800,580,090.12
  5. Step 5: Solve for x
    x = 800,580,090.12/31,719.07
  6. Step 6: Final answer
    x = 25,239.71

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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.