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Finding the Fourth Proportional to 21,379.52, 32,069.32 and 8,238.08

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Solution

The fourth proportional to 21,379.52, 32,069.32 and 8,238.08 is: 12,357.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.52 : 32,069.32 = 8,238.08 : x
  2. Step 2: Convert to fraction form
    21,379.52/32,069.32 = 8,238.08/x
  3. Step 3: Cross multiply
    21,379.52x = 32,069.32 × 8,238.08
  4. Step 4: Simplify right side
    21,379.52x = 264,189,623.71
  5. Step 5: Solve for x
    x = 264,189,623.71/21,379.52
  6. Step 6: Final answer
    x = 12,357.14

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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.