Home / 38,586.78-57,865.77-13,279.16

Finding the Fourth Proportional to 38,586.78, 57,865.77 and 13,279.16

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Solution

The fourth proportional to 38,586.78, 57,865.77 and 13,279.16 is: 19,913.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,586.78 : 57,865.77 = 13,279.16 : x
  2. Step 2: Convert to fraction form
    38,586.78/57,865.77 = 13,279.16/x
  3. Step 3: Cross multiply
    38,586.78x = 57,865.77 × 13,279.16
  4. Step 4: Simplify right side
    38,586.78x = 768,408,963.02
  5. Step 5: Solve for x
    x = 768,408,963.02/38,586.78
  6. Step 6: Final answer
    x = 19,913.79

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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.