Home / 13,183.60-19,775.40-5,390.59

Finding the Fourth Proportional to 13,183.60, 19,775.40 and 5,390.59

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Solution

The fourth proportional to 13,183.60, 19,775.40 and 5,390.59 is: 8,085.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.60 : 19,775.40 = 5,390.59 : x
  2. Step 2: Convert to fraction form
    13,183.60/19,775.40 = 5,390.59/x
  3. Step 3: Cross multiply
    13,183.60x = 19,775.40 × 5,390.59
  4. Step 4: Simplify right side
    13,183.60x = 106,601,073.49
  5. Step 5: Solve for x
    x = 106,601,073.49/13,183.60
  6. Step 6: Final answer
    x = 8,085.89

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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.