Home / 15,217.27-21,000.81-8,503.72

Finding the Fourth Proportional to 15,217.27, 21,000.81 and 8,503.72

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Solution

The fourth proportional to 15,217.27, 21,000.81 and 8,503.72 is: 11,735.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,217.27 : 21,000.81 = 8,503.72 : x
  2. Step 2: Convert to fraction form
    15,217.27/21,000.81 = 8,503.72/x
  3. Step 3: Cross multiply
    15,217.27x = 21,000.81 × 8,503.72
  4. Step 4: Simplify right side
    15,217.27x = 178,585,008.01
  5. Step 5: Solve for x
    x = 178,585,008.01/15,217.27
  6. Step 6: Final answer
    x = 11,735.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.