Home / 13,187.40-19,781.04-5,396.22

Finding the Fourth Proportional to 13,187.40, 19,781.04 and 5,396.22

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Solution

The fourth proportional to 13,187.40, 19,781.04 and 5,396.22 is: 8,094.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.40 : 19,781.04 = 5,396.22 : x
  2. Step 2: Convert to fraction form
    13,187.40/19,781.04 = 5,396.22/x
  3. Step 3: Cross multiply
    13,187.40x = 19,781.04 × 5,396.22
  4. Step 4: Simplify right side
    13,187.40x = 106,742,789.73
  5. Step 5: Solve for x
    x = 106,742,789.73/13,187.40
  6. Step 6: Final answer
    x = 8,094.30

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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.