Home / 18,210.56-25,129.04-11,135.61

Finding the Fourth Proportional to 18,210.56, 25,129.04 and 11,135.61

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Solution

The fourth proportional to 18,210.56, 25,129.04 and 11,135.61 is: 15,366.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,210.56 : 25,129.04 = 11,135.61 : x
  2. Step 2: Convert to fraction form
    18,210.56/25,129.04 = 11,135.61/x
  3. Step 3: Cross multiply
    18,210.56x = 25,129.04 × 11,135.61
  4. Step 4: Simplify right side
    18,210.56x = 279,827,133.44
  5. Step 5: Solve for x
    x = 279,827,133.44/18,210.56
  6. Step 6: Final answer
    x = 15,366.21

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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.