Home / 13,633.78-20,417.84-7,772.62

Finding the Fourth Proportional to 13,633.78, 20,417.84 and 7,772.62

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Solution

The fourth proportional to 13,633.78, 20,417.84 and 7,772.62 is: 11,640.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.78 : 20,417.84 = 7,772.62 : x
  2. Step 2: Convert to fraction form
    13,633.78/20,417.84 = 7,772.62/x
  3. Step 3: Cross multiply
    13,633.78x = 20,417.84 × 7,772.62
  4. Step 4: Simplify right side
    13,633.78x = 158,700,111.54
  5. Step 5: Solve for x
    x = 158,700,111.54/13,633.78
  6. Step 6: Final answer
    x = 11,640.21

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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.