Home / 20,539.24-28,344.16-11,586.72

Finding the Fourth Proportional to 20,539.24, 28,344.16 and 11,586.72

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Solution

The fourth proportional to 20,539.24, 28,344.16 and 11,586.72 is: 15,989.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.24 : 28,344.16 = 11,586.72 : x
  2. Step 2: Convert to fraction form
    20,539.24/28,344.16 = 11,586.72/x
  3. Step 3: Cross multiply
    20,539.24x = 28,344.16 × 11,586.72
  4. Step 4: Simplify right side
    20,539.24x = 328,415,845.56
  5. Step 5: Solve for x
    x = 328,415,845.56/20,539.24
  6. Step 6: Final answer
    x = 15,989.68

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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.