Home / 31,446.48-43,410.51-21,115.52

Finding the Fourth Proportional to 31,446.48, 43,410.51 and 21,115.52

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Solution

The fourth proportional to 31,446.48, 43,410.51 and 21,115.52 is: 29,149.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,446.48 : 43,410.51 = 21,115.52 : x
  2. Step 2: Convert to fraction form
    31,446.48/43,410.51 = 21,115.52/x
  3. Step 3: Cross multiply
    31,446.48x = 43,410.51 × 21,115.52
  4. Step 4: Simplify right side
    31,446.48x = 916,635,492.12
  5. Step 5: Solve for x
    x = 916,635,492.12/31,446.48
  6. Step 6: Final answer
    x = 29,149.07

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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.