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Finding the Fourth Proportional to 26,779.72, 40,171.74 and 8,311.72

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Solution

The fourth proportional to 26,779.72, 40,171.74 and 8,311.72 is: 12,468.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,779.72 : 40,171.74 = 8,311.72 : x
  2. Step 2: Convert to fraction form
    26,779.72/40,171.74 = 8,311.72/x
  3. Step 3: Cross multiply
    26,779.72x = 40,171.74 × 8,311.72
  4. Step 4: Simplify right side
    26,779.72x = 333,896,254.79
  5. Step 5: Solve for x
    x = 333,896,254.79/26,779.72
  6. Step 6: Final answer
    x = 12,468.25

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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.