Home / 27,135.72-37,360.26-21,159.72

Finding the Fourth Proportional to 27,135.72, 37,360.26 and 21,159.72

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Solution

The fourth proportional to 27,135.72, 37,360.26 and 21,159.72 is: 29,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,135.72 : 37,360.26 = 21,159.72 : x
  2. Step 2: Convert to fraction form
    27,135.72/37,360.26 = 21,159.72/x
  3. Step 3: Cross multiply
    27,135.72x = 37,360.26 × 21,159.72
  4. Step 4: Simplify right side
    27,135.72x = 790,532,640.73
  5. Step 5: Solve for x
    x = 790,532,640.73/27,135.72
  6. Step 6: Final answer
    x = 29,132.55

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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.