Home / 31,839.03-43,938.06-19,909.35

Finding the Fourth Proportional to 31,839.03, 43,938.06 and 19,909.35

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Solution

The fourth proportional to 31,839.03, 43,938.06 and 19,909.35 is: 27,475.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,839.03 : 43,938.06 = 19,909.35 : x
  2. Step 2: Convert to fraction form
    31,839.03/43,938.06 = 19,909.35/x
  3. Step 3: Cross multiply
    31,839.03x = 43,938.06 × 19,909.35
  4. Step 4: Simplify right side
    31,839.03x = 874,777,975.43
  5. Step 5: Solve for x
    x = 874,777,975.43/31,839.03
  6. Step 6: Final answer
    x = 27,475.02

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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.