Home / 27,128.90-37,436.10-15,189.50

Finding the Fourth Proportional to 27,128.90, 37,436.10 and 15,189.50

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Solution

The fourth proportional to 27,128.90, 37,436.10 and 15,189.50 is: 20,960.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,128.90 : 37,436.10 = 15,189.50 : x
  2. Step 2: Convert to fraction form
    27,128.90/37,436.10 = 15,189.50/x
  3. Step 3: Cross multiply
    27,128.90x = 37,436.10 × 15,189.50
  4. Step 4: Simplify right side
    27,128.90x = 568,635,640.95
  5. Step 5: Solve for x
    x = 568,635,640.95/27,128.90
  6. Step 6: Final answer
    x = 20,960.51

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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.