Home / 21,380.52-32,070.82-8,239.08

Finding the Fourth Proportional to 21,380.52, 32,070.82 and 8,239.08

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Solution

The fourth proportional to 21,380.52, 32,070.82 and 8,239.08 is: 12,358.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.52 : 32,070.82 = 8,239.08 : x
  2. Step 2: Convert to fraction form
    21,380.52/32,070.82 = 8,239.08/x
  3. Step 3: Cross multiply
    21,380.52x = 32,070.82 × 8,239.08
  4. Step 4: Simplify right side
    21,380.52x = 264,234,051.65
  5. Step 5: Solve for x
    x = 264,234,051.65/21,380.52
  6. Step 6: Final answer
    x = 12,358.64

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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.