Home / 13,222.44-18,240.66-7,916.23

Finding the Fourth Proportional to 13,222.44, 18,240.66 and 7,916.23

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Solution

The fourth proportional to 13,222.44, 18,240.66 and 7,916.23 is: 10,920.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.44 : 18,240.66 = 7,916.23 : x
  2. Step 2: Convert to fraction form
    13,222.44/18,240.66 = 7,916.23/x
  3. Step 3: Cross multiply
    13,222.44x = 18,240.66 × 7,916.23
  4. Step 4: Simplify right side
    13,222.44x = 144,397,259.91
  5. Step 5: Solve for x
    x = 144,397,259.91/13,222.44
  6. Step 6: Final answer
    x = 10,920.62

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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.