Home / 31,605.32-43,613.53-18,872.87

Finding the Fourth Proportional to 31,605.32, 43,613.53 and 18,872.87

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Solution

The fourth proportional to 31,605.32, 43,613.53 and 18,872.87 is: 26,043.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,605.32 : 43,613.53 = 18,872.87 : x
  2. Step 2: Convert to fraction form
    31,605.32/43,613.53 = 18,872.87/x
  3. Step 3: Cross multiply
    31,605.32x = 43,613.53 × 18,872.87
  4. Step 4: Simplify right side
    31,605.32x = 823,112,216.68
  5. Step 5: Solve for x
    x = 823,112,216.68/31,605.32
  6. Step 6: Final answer
    x = 26,043.47

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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.