Home / 13,815.45-20,723.31-7,572.06

Finding the Fourth Proportional to 13,815.45, 20,723.31 and 7,572.06

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Solution

The fourth proportional to 13,815.45, 20,723.31 and 7,572.06 is: 11,358.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.45 : 20,723.31 = 7,572.06 : x
  2. Step 2: Convert to fraction form
    13,815.45/20,723.31 = 7,572.06/x
  3. Step 3: Cross multiply
    13,815.45x = 20,723.31 × 7,572.06
  4. Step 4: Simplify right side
    13,815.45x = 156,918,146.72
  5. Step 5: Solve for x
    x = 156,918,146.72/13,815.45
  6. Step 6: Final answer
    x = 11,358.16

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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.