Home / 15,719.18-21,684.09-11,936.08

Finding the Fourth Proportional to 15,719.18, 21,684.09 and 11,936.08

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Solution

The fourth proportional to 15,719.18, 21,684.09 and 11,936.08 is: 16,465.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,719.18 : 21,684.09 = 11,936.08 : x
  2. Step 2: Convert to fraction form
    15,719.18/21,684.09 = 11,936.08/x
  3. Step 3: Cross multiply
    15,719.18x = 21,684.09 × 11,936.08
  4. Step 4: Simplify right side
    15,719.18x = 258,822,924.55
  5. Step 5: Solve for x
    x = 258,822,924.55/15,719.18
  6. Step 6: Final answer
    x = 16,465.42

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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.