Home / 15,719.18-21,684.10-11,936.06

Finding the Fourth Proportional to 15,719.18, 21,684.10 and 11,936.06

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Solution

The fourth proportional to 15,719.18, 21,684.10 and 11,936.06 is: 16,465.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,719.18 : 21,684.10 = 11,936.06 : x
  2. Step 2: Convert to fraction form
    15,719.18/21,684.10 = 11,936.06/x
  3. Step 3: Cross multiply
    15,719.18x = 21,684.10 × 11,936.06
  4. Step 4: Simplify right side
    15,719.18x = 258,822,718.65
  5. Step 5: Solve for x
    x = 258,822,718.65/15,719.18
  6. Step 6: Final answer
    x = 16,465.41

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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.