Home / 31,428.80-43,371.90-17,282.55

Finding the Fourth Proportional to 31,428.80, 43,371.90 and 17,282.55

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Solution

The fourth proportional to 31,428.80, 43,371.90 and 17,282.55 is: 23,850.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,428.80 : 43,371.90 = 17,282.55 : x
  2. Step 2: Convert to fraction form
    31,428.80/43,371.90 = 17,282.55/x
  3. Step 3: Cross multiply
    31,428.80x = 43,371.90 × 17,282.55
  4. Step 4: Simplify right side
    31,428.80x = 749,577,030.35
  5. Step 5: Solve for x
    x = 749,577,030.35/31,428.80
  6. Step 6: Final answer
    x = 23,850.00

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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.