Home / 18,338.12-27,503.66-5,187.32

Finding the Fourth Proportional to 18,338.12, 27,503.66 and 5,187.32

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Solution

The fourth proportional to 18,338.12, 27,503.66 and 5,187.32 is: 7,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.12 : 27,503.66 = 5,187.32 : x
  2. Step 2: Convert to fraction form
    18,338.12/27,503.66 = 5,187.32/x
  3. Step 3: Cross multiply
    18,338.12x = 27,503.66 × 5,187.32
  4. Step 4: Simplify right side
    18,338.12x = 142,670,285.59
  5. Step 5: Solve for x
    x = 142,670,285.59/18,338.12
  6. Step 6: Final answer
    x = 7,779.98

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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.