Home / 11,473.20-15,840.63-8,815.86

Finding the Fourth Proportional to 11,473.20, 15,840.63 and 8,815.86

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Solution

The fourth proportional to 11,473.20, 15,840.63 and 8,815.86 is: 12,171.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,473.20 : 15,840.63 = 8,815.86 : x
  2. Step 2: Convert to fraction form
    11,473.20/15,840.63 = 8,815.86/x
  3. Step 3: Cross multiply
    11,473.20x = 15,840.63 × 8,815.86
  4. Step 4: Simplify right side
    11,473.20x = 139,648,776.39
  5. Step 5: Solve for x
    x = 139,648,776.39/11,473.20
  6. Step 6: Final answer
    x = 12,171.74

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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.