Home / 31,839.34-43,938.49-19,909.66

Finding the Fourth Proportional to 31,839.34, 43,938.49 and 19,909.66

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Solution

The fourth proportional to 31,839.34, 43,938.49 and 19,909.66 is: 27,475.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,839.34 : 43,938.49 = 19,909.66 : x
  2. Step 2: Convert to fraction form
    31,839.34/43,938.49 = 19,909.66/x
  3. Step 3: Cross multiply
    31,839.34x = 43,938.49 × 19,909.66
  4. Step 4: Simplify right side
    31,839.34x = 874,800,347.04
  5. Step 5: Solve for x
    x = 874,800,347.04/31,839.34
  6. Step 6: Final answer
    x = 27,475.45

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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.