Home / 12,845.24-17,721.18-8,654.84

Finding the Fourth Proportional to 12,845.24, 17,721.18 and 8,654.84

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Solution

The fourth proportional to 12,845.24, 17,721.18 and 8,654.84 is: 11,940.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,845.24 : 17,721.18 = 8,654.84 : x
  2. Step 2: Convert to fraction form
    12,845.24/17,721.18 = 8,654.84/x
  3. Step 3: Cross multiply
    12,845.24x = 17,721.18 × 8,654.84
  4. Step 4: Simplify right side
    12,845.24x = 153,373,977.51
  5. Step 5: Solve for x
    x = 153,373,977.51/12,845.24
  6. Step 6: Final answer
    x = 11,940.14

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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.