Home / 13,623.12-18,800.24-7,654.43

Finding the Fourth Proportional to 13,623.12, 18,800.24 and 7,654.43

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Solution

The fourth proportional to 13,623.12, 18,800.24 and 7,654.43 is: 10,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.12 : 18,800.24 = 7,654.43 : x
  2. Step 2: Convert to fraction form
    13,623.12/18,800.24 = 7,654.43/x
  3. Step 3: Cross multiply
    13,623.12x = 18,800.24 × 7,654.43
  4. Step 4: Simplify right side
    13,623.12x = 143,905,129.79
  5. Step 5: Solve for x
    x = 143,905,129.79/13,623.12
  6. Step 6: Final answer
    x = 10,563.30

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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.