Home / 18,846.24-28,276.80-8,455.68

Finding the Fourth Proportional to 18,846.24, 28,276.80 and 8,455.68

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Solution

The fourth proportional to 18,846.24, 28,276.80 and 8,455.68 is: 12,686.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,846.24 : 28,276.80 = 8,455.68 : x
  2. Step 2: Convert to fraction form
    18,846.24/28,276.80 = 8,455.68/x
  3. Step 3: Cross multiply
    18,846.24x = 28,276.80 × 8,455.68
  4. Step 4: Simplify right side
    18,846.24x = 239,099,572.22
  5. Step 5: Solve for x
    x = 239,099,572.22/18,846.24
  6. Step 6: Final answer
    x = 12,686.86

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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.