Home / 31,856.70-43,985.10-22,317.75

Finding the Fourth Proportional to 31,856.70, 43,985.10 and 22,317.75

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Solution

The fourth proportional to 31,856.70, 43,985.10 and 22,317.75 is: 30,814.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,856.70 : 43,985.10 = 22,317.75 : x
  2. Step 2: Convert to fraction form
    31,856.70/43,985.10 = 22,317.75/x
  3. Step 3: Cross multiply
    31,856.70x = 43,985.10 × 22,317.75
  4. Step 4: Simplify right side
    31,856.70x = 981,648,465.53
  5. Step 5: Solve for x
    x = 981,648,465.53/31,856.70
  6. Step 6: Final answer
    x = 30,814.51

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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.