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Finding the Fourth Proportional to 14,779.92, 20,396.12 and 8,065.66

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Solution

The fourth proportional to 14,779.92, 20,396.12 and 8,065.66 is: 11,130.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.92 : 20,396.12 = 8,065.66 : x
  2. Step 2: Convert to fraction form
    14,779.92/20,396.12 = 8,065.66/x
  3. Step 3: Cross multiply
    14,779.92x = 20,396.12 × 8,065.66
  4. Step 4: Simplify right side
    14,779.92x = 164,508,077.92
  5. Step 5: Solve for x
    x = 164,508,077.92/14,779.92
  6. Step 6: Final answer
    x = 11,130.51

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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.