Home / 28,289.25-39,031.07-18,223.52

Finding the Fourth Proportional to 28,289.25, 39,031.07 and 18,223.52

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Solution

The fourth proportional to 28,289.25, 39,031.07 and 18,223.52 is: 25,143.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.25 : 39,031.07 = 18,223.52 : x
  2. Step 2: Convert to fraction form
    28,289.25/39,031.07 = 18,223.52/x
  3. Step 3: Cross multiply
    28,289.25x = 39,031.07 × 18,223.52
  4. Step 4: Simplify right side
    28,289.25x = 711,283,198.49
  5. Step 5: Solve for x
    x = 711,283,198.49/28,289.25
  6. Step 6: Final answer
    x = 25,143.23

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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.