Home / 31,780.66-43,839.08-19,823.23

Finding the Fourth Proportional to 31,780.66, 43,839.08 and 19,823.23

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Solution

The fourth proportional to 31,780.66, 43,839.08 and 19,823.23 is: 27,344.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,780.66 : 43,839.08 = 19,823.23 : x
  2. Step 2: Convert to fraction form
    31,780.66/43,839.08 = 19,823.23/x
  3. Step 3: Cross multiply
    31,780.66x = 43,839.08 × 19,823.23
  4. Step 4: Simplify right side
    31,780.66x = 869,032,031.45
  5. Step 5: Solve for x
    x = 869,032,031.45/31,780.66
  6. Step 6: Final answer
    x = 27,344.68

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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.