Home / 13,411.94-20,111.43-5,618.66

Finding the Fourth Proportional to 13,411.94, 20,111.43 and 5,618.66

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Solution

The fourth proportional to 13,411.94, 20,111.43 and 5,618.66 is: 8,425.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.94 : 20,111.43 = 5,618.66 : x
  2. Step 2: Convert to fraction form
    13,411.94/20,111.43 = 5,618.66/x
  3. Step 3: Cross multiply
    13,411.94x = 20,111.43 × 5,618.66
  4. Step 4: Simplify right side
    13,411.94x = 112,999,287.28
  5. Step 5: Solve for x
    x = 112,999,287.28/13,411.94
  6. Step 6: Final answer
    x = 8,425.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.