Home / 12,187.71-18,287.37-8,445.26

Finding the Fourth Proportional to 12,187.71, 18,287.37 and 8,445.26

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Solution

The fourth proportional to 12,187.71, 18,287.37 and 8,445.26 is: 12,671.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.71 : 18,287.37 = 8,445.26 : x
  2. Step 2: Convert to fraction form
    12,187.71/18,287.37 = 8,445.26/x
  3. Step 3: Cross multiply
    12,187.71x = 18,287.37 × 8,445.26
  4. Step 4: Simplify right side
    12,187.71x = 154,441,552.14
  5. Step 5: Solve for x
    x = 154,441,552.14/12,187.71
  6. Step 6: Final answer
    x = 12,671.91

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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.