Home / 12,742.84-17,588.46-7,155.64

Finding the Fourth Proportional to 12,742.84, 17,588.46 and 7,155.64

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Solution

The fourth proportional to 12,742.84, 17,588.46 and 7,155.64 is: 9,876.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.84 : 17,588.46 = 7,155.64 : x
  2. Step 2: Convert to fraction form
    12,742.84/17,588.46 = 7,155.64/x
  3. Step 3: Cross multiply
    12,742.84x = 17,588.46 × 7,155.64
  4. Step 4: Simplify right side
    12,742.84x = 125,856,687.91
  5. Step 5: Solve for x
    x = 125,856,687.91/12,742.84
  6. Step 6: Final answer
    x = 9,876.66

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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.