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Finding the Fourth Proportional to 21,656.91, 32,486.52 and 6,866.97

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Solution

The fourth proportional to 21,656.91, 32,486.52 and 6,866.97 is: 10,300.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.91 : 32,486.52 = 6,866.97 : x
  2. Step 2: Convert to fraction form
    21,656.91/32,486.52 = 6,866.97/x
  3. Step 3: Cross multiply
    21,656.91x = 32,486.52 × 6,866.97
  4. Step 4: Simplify right side
    21,656.91x = 223,083,958.24
  5. Step 5: Solve for x
    x = 223,083,958.24/21,656.91
  6. Step 6: Final answer
    x = 10,300.82

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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.