Home / 13,215.99-19,785.09-8,822.55

Finding the Fourth Proportional to 13,215.99, 19,785.09 and 8,822.55

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Solution

The fourth proportional to 13,215.99, 19,785.09 and 8,822.55 is: 13,207.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.99 : 19,785.09 = 8,822.55 : x
  2. Step 2: Convert to fraction form
    13,215.99/19,785.09 = 8,822.55/x
  3. Step 3: Cross multiply
    13,215.99x = 19,785.09 × 8,822.55
  4. Step 4: Simplify right side
    13,215.99x = 174,554,945.78
  5. Step 5: Solve for x
    x = 174,554,945.78/13,215.99
  6. Step 6: Final answer
    x = 13,207.86

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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.