Home / 20,835.93-28,723.65-14,857.20

Finding the Fourth Proportional to 20,835.93, 28,723.65 and 14,857.20

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Solution

The fourth proportional to 20,835.93, 28,723.65 and 14,857.20 is: 20,481.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.93 : 28,723.65 = 14,857.20 : x
  2. Step 2: Convert to fraction form
    20,835.93/28,723.65 = 14,857.20/x
  3. Step 3: Cross multiply
    20,835.93x = 28,723.65 × 14,857.20
  4. Step 4: Simplify right side
    20,835.93x = 426,753,012.78
  5. Step 5: Solve for x
    x = 426,753,012.78/20,835.93
  6. Step 6: Final answer
    x = 20,481.59

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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.