Home / 18,866.61-28,277.24-13,311.63

Finding the Fourth Proportional to 18,866.61, 28,277.24 and 13,311.63

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Solution

The fourth proportional to 18,866.61, 28,277.24 and 13,311.63 is: 19,951.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,866.61 : 28,277.24 = 13,311.63 : x
  2. Step 2: Convert to fraction form
    18,866.61/28,277.24 = 13,311.63/x
  3. Step 3: Cross multiply
    18,866.61x = 28,277.24 × 13,311.63
  4. Step 4: Simplify right side
    18,866.61x = 376,416,089.74
  5. Step 5: Solve for x
    x = 376,416,089.74/18,866.61
  6. Step 6: Final answer
    x = 19,951.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.