Home / 19,722.68-27,217.44-11,225.45

Finding the Fourth Proportional to 19,722.68, 27,217.44 and 11,225.45

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Solution

The fourth proportional to 19,722.68, 27,217.44 and 11,225.45 is: 15,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,722.68 : 27,217.44 = 11,225.45 : x
  2. Step 2: Convert to fraction form
    19,722.68/27,217.44 = 11,225.45/x
  3. Step 3: Cross multiply
    19,722.68x = 27,217.44 × 11,225.45
  4. Step 4: Simplify right side
    19,722.68x = 305,528,011.85
  5. Step 5: Solve for x
    x = 305,528,011.85/19,722.68
  6. Step 6: Final answer
    x = 15,491.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.