Home / 21,515.28-32,274.90-8,368.64

Finding the Fourth Proportional to 21,515.28, 32,274.90 and 8,368.64

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Solution

The fourth proportional to 21,515.28, 32,274.90 and 8,368.64 is: 12,553.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.28 : 32,274.90 = 8,368.64 : x
  2. Step 2: Convert to fraction form
    21,515.28/32,274.90 = 8,368.64/x
  3. Step 3: Cross multiply
    21,515.28x = 32,274.90 × 8,368.64
  4. Step 4: Simplify right side
    21,515.28x = 270,097,019.14
  5. Step 5: Solve for x
    x = 270,097,019.14/21,515.28
  6. Step 6: Final answer
    x = 12,553.73

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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.