Home / 31,449.70-43,395.64-18,018.37

Finding the Fourth Proportional to 31,449.70, 43,395.64 and 18,018.37

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Solution

The fourth proportional to 31,449.70, 43,395.64 and 18,018.37 is: 24,862.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,449.70 : 43,395.64 = 18,018.37 : x
  2. Step 2: Convert to fraction form
    31,449.70/43,395.64 = 18,018.37/x
  3. Step 3: Cross multiply
    31,449.70x = 43,395.64 × 18,018.37
  4. Step 4: Simplify right side
    31,449.70x = 781,918,697.91
  5. Step 5: Solve for x
    x = 781,918,697.91/31,449.70
  6. Step 6: Final answer
    x = 24,862.52

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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.