Home / 31,885.09-43,989.53-19,943.89

Finding the Fourth Proportional to 31,885.09, 43,989.53 and 19,943.89

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Solution

The fourth proportional to 31,885.09, 43,989.53 and 19,943.89 is: 27,515.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,885.09 : 43,989.53 = 19,943.89 : x
  2. Step 2: Convert to fraction form
    31,885.09/43,989.53 = 19,943.89/x
  3. Step 3: Cross multiply
    31,885.09x = 43,989.53 × 19,943.89
  4. Step 4: Simplify right side
    31,885.09x = 877,322,177.38
  5. Step 5: Solve for x
    x = 877,322,177.38/31,885.09
  6. Step 6: Final answer
    x = 27,515.13

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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.