Home / 13,123.22-19,662.90-9,220.64

Finding the Fourth Proportional to 13,123.22, 19,662.90 and 9,220.64

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Solution

The fourth proportional to 13,123.22, 19,662.90 and 9,220.64 is: 13,815.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.22 : 19,662.90 = 9,220.64 : x
  2. Step 2: Convert to fraction form
    13,123.22/19,662.90 = 9,220.64/x
  3. Step 3: Cross multiply
    13,123.22x = 19,662.90 × 9,220.64
  4. Step 4: Simplify right side
    13,123.22x = 181,304,423.94
  5. Step 5: Solve for x
    x = 181,304,423.94/13,123.22
  6. Step 6: Final answer
    x = 13,815.55

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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.