Home / 27,078.90-37,370.10-15,142.20

Finding the Fourth Proportional to 27,078.90, 37,370.10 and 15,142.20

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Solution

The fourth proportional to 27,078.90, 37,370.10 and 15,142.20 is: 20,896.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,078.90 : 37,370.10 = 15,142.20 : x
  2. Step 2: Convert to fraction form
    27,078.90/37,370.10 = 15,142.20/x
  3. Step 3: Cross multiply
    27,078.90x = 37,370.10 × 15,142.20
  4. Step 4: Simplify right side
    27,078.90x = 565,865,528.22
  5. Step 5: Solve for x
    x = 565,865,528.22/27,078.90
  6. Step 6: Final answer
    x = 20,896.92

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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.