Home / 18,685.66-25,785.89-10,187.85

Finding the Fourth Proportional to 18,685.66, 25,785.89 and 10,187.85

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Solution

The fourth proportional to 18,685.66, 25,785.89 and 10,187.85 is: 14,059.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.66 : 25,785.89 = 10,187.85 : x
  2. Step 2: Convert to fraction form
    18,685.66/25,785.89 = 10,187.85/x
  3. Step 3: Cross multiply
    18,685.66x = 25,785.89 × 10,187.85
  4. Step 4: Simplify right side
    18,685.66x = 262,702,848.18
  5. Step 5: Solve for x
    x = 262,702,848.18/18,685.66
  6. Step 6: Final answer
    x = 14,059.06

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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.