Home / 13,622.80-18,801.35-7,654.92

Finding the Fourth Proportional to 13,622.80, 18,801.35 and 7,654.92

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Solution

The fourth proportional to 13,622.80, 18,801.35 and 7,654.92 is: 10,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.80 : 18,801.35 = 7,654.92 : x
  2. Step 2: Convert to fraction form
    13,622.80/18,801.35 = 7,654.92/x
  3. Step 3: Cross multiply
    13,622.80x = 18,801.35 × 7,654.92
  4. Step 4: Simplify right side
    13,622.80x = 143,922,830.14
  5. Step 5: Solve for x
    x = 143,922,830.14/13,622.80
  6. Step 6: Final answer
    x = 10,564.85

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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.