Home / 20,835.60-28,723.24-14,856.90

Finding the Fourth Proportional to 20,835.60, 28,723.24 and 14,856.90

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Solution

The fourth proportional to 20,835.60, 28,723.24 and 14,856.90 is: 20,481.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.60 : 28,723.24 = 14,856.90 : x
  2. Step 2: Convert to fraction form
    20,835.60/28,723.24 = 14,856.90/x
  3. Step 3: Cross multiply
    20,835.60x = 28,723.24 × 14,856.90
  4. Step 4: Simplify right side
    20,835.60x = 426,738,304.36
  5. Step 5: Solve for x
    x = 426,738,304.36/20,835.60
  6. Step 6: Final answer
    x = 20,481.21

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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.