Home / 13,209.05-19,808.99-5,309.22

Finding the Fourth Proportional to 13,209.05, 19,808.99 and 5,309.22

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Solution

The fourth proportional to 13,209.05, 19,808.99 and 5,309.22 is: 7,961.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.05 : 19,808.99 = 5,309.22 : x
  2. Step 2: Convert to fraction form
    13,209.05/19,808.99 = 5,309.22/x
  3. Step 3: Cross multiply
    13,209.05x = 19,808.99 × 5,309.22
  4. Step 4: Simplify right side
    13,209.05x = 105,170,259.34
  5. Step 5: Solve for x
    x = 105,170,259.34/13,209.05
  6. Step 6: Final answer
    x = 7,961.99

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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.