Home / 13,286.01-19,930.16-3,425.20

Finding the Fourth Proportional to 13,286.01, 19,930.16 and 3,425.20

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Solution

The fourth proportional to 13,286.01, 19,930.16 and 3,425.20 is: 5,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.01 : 19,930.16 = 3,425.20 : x
  2. Step 2: Convert to fraction form
    13,286.01/19,930.16 = 3,425.20/x
  3. Step 3: Cross multiply
    13,286.01x = 19,930.16 × 3,425.20
  4. Step 4: Simplify right side
    13,286.01x = 68,264,875.51
  5. Step 5: Solve for x
    x = 68,264,875.51/13,286.01
  6. Step 6: Final answer
    x = 5,138.10

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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.