Home / 15,318.30-21,139.24-8,949.27

Finding the Fourth Proportional to 15,318.30, 21,139.24 and 8,949.27

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Solution

The fourth proportional to 15,318.30, 21,139.24 and 8,949.27 is: 12,349.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318.30 : 21,139.24 = 8,949.27 : x
  2. Step 2: Convert to fraction form
    15,318.30/21,139.24 = 8,949.27/x
  3. Step 3: Cross multiply
    15,318.30x = 21,139.24 × 8,949.27
  4. Step 4: Simplify right side
    15,318.30x = 189,180,766.35
  5. Step 5: Solve for x
    x = 189,180,766.35/15,318.30
  6. Step 6: Final answer
    x = 12,349.98

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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.