Home / 20,387.77-28,125.53-14,422.73

Finding the Fourth Proportional to 20,387.77, 28,125.53 and 14,422.73

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Solution

The fourth proportional to 20,387.77, 28,125.53 and 14,422.73 is: 19,896.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.77 : 28,125.53 = 14,422.73 : x
  2. Step 2: Convert to fraction form
    20,387.77/28,125.53 = 14,422.73/x
  3. Step 3: Cross multiply
    20,387.77x = 28,125.53 × 14,422.73
  4. Step 4: Simplify right side
    20,387.77x = 405,646,766.64
  5. Step 5: Solve for x
    x = 405,646,766.64/20,387.77
  6. Step 6: Final answer
    x = 19,896.58

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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.