Home / 27,079.90-37,371.48-15,143.20

Finding the Fourth Proportional to 27,079.90, 37,371.48 and 15,143.20

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Solution

The fourth proportional to 27,079.90, 37,371.48 and 15,143.20 is: 20,898.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,079.90 : 37,371.48 = 15,143.20 : x
  2. Step 2: Convert to fraction form
    27,079.90/37,371.48 = 15,143.20/x
  3. Step 3: Cross multiply
    27,079.90x = 37,371.48 × 15,143.20
  4. Step 4: Simplify right side
    27,079.90x = 565,923,795.94
  5. Step 5: Solve for x
    x = 565,923,795.94/27,079.90
  6. Step 6: Final answer
    x = 20,898.30

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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.