Home / 13,239.69-19,859.09-6,215.78

Finding the Fourth Proportional to 13,239.69, 19,859.09 and 6,215.78

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Solution

The fourth proportional to 13,239.69, 19,859.09 and 6,215.78 is: 9,323.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.69 : 19,859.09 = 6,215.78 : x
  2. Step 2: Convert to fraction form
    13,239.69/19,859.09 = 6,215.78/x
  3. Step 3: Cross multiply
    13,239.69x = 19,859.09 × 6,215.78
  4. Step 4: Simplify right side
    13,239.69x = 123,439,604.07
  5. Step 5: Solve for x
    x = 123,439,604.07/13,239.69
  6. Step 6: Final answer
    x = 9,323.45

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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.