Home / 12,774.08-17,629.28-7,109.92

Finding the Fourth Proportional to 12,774.08, 17,629.28 and 7,109.92

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Solution

The fourth proportional to 12,774.08, 17,629.28 and 7,109.92 is: 9,812.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,774.08 : 17,629.28 = 7,109.92 : x
  2. Step 2: Convert to fraction form
    12,774.08/17,629.28 = 7,109.92/x
  3. Step 3: Cross multiply
    12,774.08x = 17,629.28 × 7,109.92
  4. Step 4: Simplify right side
    12,774.08x = 125,342,770.46
  5. Step 5: Solve for x
    x = 125,342,770.46/12,774.08
  6. Step 6: Final answer
    x = 9,812.27

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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.