Home / 21,528.99-32,287.21-8,378.24

Finding the Fourth Proportional to 21,528.99, 32,287.21 and 8,378.24

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Solution

The fourth proportional to 21,528.99, 32,287.21 and 8,378.24 is: 12,564.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,528.99 : 32,287.21 = 8,378.24 : x
  2. Step 2: Convert to fraction form
    21,528.99/32,287.21 = 8,378.24/x
  3. Step 3: Cross multiply
    21,528.99x = 32,287.21 × 8,378.24
  4. Step 4: Simplify right side
    21,528.99x = 270,509,811.93
  5. Step 5: Solve for x
    x = 270,509,811.93/21,528.99
  6. Step 6: Final answer
    x = 12,564.91

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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.