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Finding the Fourth Proportional to 14,779.56, 22,172.04 and 4,917.90

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Solution

The fourth proportional to 14,779.56, 22,172.04 and 4,917.90 is: 7,377.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.56 : 22,172.04 = 4,917.90 : x
  2. Step 2: Convert to fraction form
    14,779.56/22,172.04 = 4,917.90/x
  3. Step 3: Cross multiply
    14,779.56x = 22,172.04 × 4,917.90
  4. Step 4: Simplify right side
    14,779.56x = 109,039,875.52
  5. Step 5: Solve for x
    x = 109,039,875.52/14,779.56
  6. Step 6: Final answer
    x = 7,377.75

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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.