Home / 15,395.27-21,247.47-8,682.99

Finding the Fourth Proportional to 15,395.27, 21,247.47 and 8,682.99

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Solution

The fourth proportional to 15,395.27, 21,247.47 and 8,682.99 is: 11,983.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,395.27 : 21,247.47 = 8,682.99 : x
  2. Step 2: Convert to fraction form
    15,395.27/21,247.47 = 8,682.99/x
  3. Step 3: Cross multiply
    15,395.27x = 21,247.47 × 8,682.99
  4. Step 4: Simplify right side
    15,395.27x = 184,491,569.54
  5. Step 5: Solve for x
    x = 184,491,569.54/15,395.27
  6. Step 6: Final answer
    x = 11,983.65

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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.