Home / 20,774.72-28,670.28-11,344.16

Finding the Fourth Proportional to 20,774.72, 28,670.28 and 11,344.16

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Solution

The fourth proportional to 20,774.72, 28,670.28 and 11,344.16 is: 15,655.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.72 : 28,670.28 = 11,344.16 : x
  2. Step 2: Convert to fraction form
    20,774.72/28,670.28 = 11,344.16/x
  3. Step 3: Cross multiply
    20,774.72x = 28,670.28 × 11,344.16
  4. Step 4: Simplify right side
    20,774.72x = 325,240,243.56
  5. Step 5: Solve for x
    x = 325,240,243.56/20,774.72
  6. Step 6: Final answer
    x = 15,655.58

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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.