Home / 31,372.48-43,288.08-21,308.96

Finding the Fourth Proportional to 31,372.48, 43,288.08 and 21,308.96

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Solution

The fourth proportional to 31,372.48, 43,288.08 and 21,308.96 is: 29,402.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,372.48 : 43,288.08 = 21,308.96 : x
  2. Step 2: Convert to fraction form
    31,372.48/43,288.08 = 21,308.96/x
  3. Step 3: Cross multiply
    31,372.48x = 43,288.08 × 21,308.96
  4. Step 4: Simplify right side
    31,372.48x = 922,423,965.20
  5. Step 5: Solve for x
    x = 922,423,965.20/31,372.48
  6. Step 6: Final answer
    x = 29,402.33

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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.