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Finding the Fourth Proportional to 14,565.72, 21,798.37 and 8,939.65

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Solution

The fourth proportional to 14,565.72, 21,798.37 and 8,939.65 is: 13,378.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,565.72 : 21,798.37 = 8,939.65 : x
  2. Step 2: Convert to fraction form
    14,565.72/21,798.37 = 8,939.65/x
  3. Step 3: Cross multiply
    14,565.72x = 21,798.37 × 8,939.65
  4. Step 4: Simplify right side
    14,565.72x = 194,869,798.37
  5. Step 5: Solve for x
    x = 194,869,798.37/14,565.72
  6. Step 6: Final answer
    x = 13,378.66

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.