Home / 13,222.11-18,245.16-7,916.79

Finding the Fourth Proportional to 13,222.11, 18,245.16 and 7,916.79

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Solution

The fourth proportional to 13,222.11, 18,245.16 and 7,916.79 is: 10,924.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.11 : 18,245.16 = 7,916.79 : x
  2. Step 2: Convert to fraction form
    13,222.11/18,245.16 = 7,916.79/x
  3. Step 3: Cross multiply
    13,222.11x = 18,245.16 × 7,916.79
  4. Step 4: Simplify right side
    13,222.11x = 144,443,100.24
  5. Step 5: Solve for x
    x = 144,443,100.24/13,222.11
  6. Step 6: Final answer
    x = 10,924.36

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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.