Home / 13,077.93-19,618.88-5,286.45

Finding the Fourth Proportional to 13,077.93, 19,618.88 and 5,286.45

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Solution

The fourth proportional to 13,077.93, 19,618.88 and 5,286.45 is: 7,930.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,077.93 : 19,618.88 = 5,286.45 : x
  2. Step 2: Convert to fraction form
    13,077.93/19,618.88 = 5,286.45/x
  3. Step 3: Cross multiply
    13,077.93x = 19,618.88 × 5,286.45
  4. Step 4: Simplify right side
    13,077.93x = 103,714,201.74
  5. Step 5: Solve for x
    x = 103,714,201.74/13,077.93
  6. Step 6: Final answer
    x = 7,930.48

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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.