Home / 27,279.78-40,920.21-14,123.58

Finding the Fourth Proportional to 27,279.78, 40,920.21 and 14,123.58

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Solution

The fourth proportional to 27,279.78, 40,920.21 and 14,123.58 is: 21,185.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,279.78 : 40,920.21 = 14,123.58 : x
  2. Step 2: Convert to fraction form
    27,279.78/40,920.21 = 14,123.58/x
  3. Step 3: Cross multiply
    27,279.78x = 40,920.21 × 14,123.58
  4. Step 4: Simplify right side
    27,279.78x = 577,939,859.55
  5. Step 5: Solve for x
    x = 577,939,859.55/27,279.78
  6. Step 6: Final answer
    x = 21,185.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.