Home / 13,140.92-19,708.40-3,780.92

Finding the Fourth Proportional to 13,140.92, 19,708.40 and 3,780.92

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Solution

The fourth proportional to 13,140.92, 19,708.40 and 3,780.92 is: 5,670.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.92 : 19,708.40 = 3,780.92 : x
  2. Step 2: Convert to fraction form
    13,140.92/19,708.40 = 3,780.92/x
  3. Step 3: Cross multiply
    13,140.92x = 19,708.40 × 3,780.92
  4. Step 4: Simplify right side
    13,140.92x = 74,515,883.73
  5. Step 5: Solve for x
    x = 74,515,883.73/13,140.92
  6. Step 6: Final answer
    x = 5,670.52

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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.