Home / 20,658.87-28,509.44-12,273.75

Finding the Fourth Proportional to 20,658.87, 28,509.44 and 12,273.75

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Solution

The fourth proportional to 20,658.87, 28,509.44 and 12,273.75 is: 16,937.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.87 : 28,509.44 = 12,273.75 : x
  2. Step 2: Convert to fraction form
    20,658.87/28,509.44 = 12,273.75/x
  3. Step 3: Cross multiply
    20,658.87x = 28,509.44 × 12,273.75
  4. Step 4: Simplify right side
    20,658.87x = 349,917,677.83
  5. Step 5: Solve for x
    x = 349,917,677.83/20,658.87
  6. Step 6: Final answer
    x = 16,937.89

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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.