Home / 19,860.10-27,411.66-11,367.12

Finding the Fourth Proportional to 19,860.10, 27,411.66 and 11,367.12

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Solution

The fourth proportional to 19,860.10, 27,411.66 and 11,367.12 is: 15,689.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.10 : 27,411.66 = 11,367.12 : x
  2. Step 2: Convert to fraction form
    19,860.10/27,411.66 = 11,367.12/x
  3. Step 3: Cross multiply
    19,860.10x = 27,411.66 × 11,367.12
  4. Step 4: Simplify right side
    19,860.10x = 311,591,536.79
  5. Step 5: Solve for x
    x = 311,591,536.79/19,860.10
  6. Step 6: Final answer
    x = 15,689.33

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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.