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Finding the Fourth Proportional to 11,865.44, 17,800.86 and 6,315.86

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Solution

The fourth proportional to 11,865.44, 17,800.86 and 6,315.86 is: 9,475.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,865.44 : 17,800.86 = 6,315.86 : x
  2. Step 2: Convert to fraction form
    11,865.44/17,800.86 = 6,315.86/x
  3. Step 3: Cross multiply
    11,865.44x = 17,800.86 × 6,315.86
  4. Step 4: Simplify right side
    11,865.44x = 112,427,807.83
  5. Step 5: Solve for x
    x = 112,427,807.83/11,865.44
  6. Step 6: Final answer
    x = 9,475.23

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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.