Home / 13,212.81-19,808.01-6,189.30

Finding the Fourth Proportional to 13,212.81, 19,808.01 and 6,189.30

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Solution

The fourth proportional to 13,212.81, 19,808.01 and 6,189.30 is: 9,278.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.81 : 19,808.01 = 6,189.30 : x
  2. Step 2: Convert to fraction form
    13,212.81/19,808.01 = 6,189.30/x
  3. Step 3: Cross multiply
    13,212.81x = 19,808.01 × 6,189.30
  4. Step 4: Simplify right side
    13,212.81x = 122,597,716.29
  5. Step 5: Solve for x
    x = 122,597,716.29/13,212.81
  6. Step 6: Final answer
    x = 9,278.70

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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.