Home / 15,381.91-21,216.42-11,806.16

Finding the Fourth Proportional to 15,381.91, 21,216.42 and 11,806.16

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Solution

The fourth proportional to 15,381.91, 21,216.42 and 11,806.16 is: 16,284.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,381.91 : 21,216.42 = 11,806.16 : x
  2. Step 2: Convert to fraction form
    15,381.91/21,216.42 = 11,806.16/x
  3. Step 3: Cross multiply
    15,381.91x = 21,216.42 × 11,806.16
  4. Step 4: Simplify right side
    15,381.91x = 250,484,462.41
  5. Step 5: Solve for x
    x = 250,484,462.41/15,381.91
  6. Step 6: Final answer
    x = 16,284.36

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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.