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Finding the Fourth Proportional to 21,473.84, 32,215.91 and 8,986.92

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Solution

The fourth proportional to 21,473.84, 32,215.91 and 8,986.92 is: 13,482.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,473.84 : 32,215.91 = 8,986.92 : x
  2. Step 2: Convert to fraction form
    21,473.84/32,215.91 = 8,986.92/x
  3. Step 3: Cross multiply
    21,473.84x = 32,215.91 × 8,986.92
  4. Step 4: Simplify right side
    21,473.84x = 289,521,760.96
  5. Step 5: Solve for x
    x = 289,521,760.96/21,473.84
  6. Step 6: Final answer
    x = 13,482.54

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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.