Home / 31,446.99-43,387.54-18,693.68

Finding the Fourth Proportional to 31,446.99, 43,387.54 and 18,693.68

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Solution

The fourth proportional to 31,446.99, 43,387.54 and 18,693.68 is: 25,791.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,446.99 : 43,387.54 = 18,693.68 : x
  2. Step 2: Convert to fraction form
    31,446.99/43,387.54 = 18,693.68/x
  3. Step 3: Cross multiply
    31,446.99x = 43,387.54 × 18,693.68
  4. Step 4: Simplify right side
    31,446.99x = 811,072,525.08
  5. Step 5: Solve for x
    x = 811,072,525.08/31,446.99
  6. Step 6: Final answer
    x = 25,791.74

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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.