Home / 12,543.40-18,814.89-3,055.75

Finding the Fourth Proportional to 12,543.40, 18,814.89 and 3,055.75

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Solution

The fourth proportional to 12,543.40, 18,814.89 and 3,055.75 is: 4,583.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.40 : 18,814.89 = 3,055.75 : x
  2. Step 2: Convert to fraction form
    12,543.40/18,814.89 = 3,055.75/x
  3. Step 3: Cross multiply
    12,543.40x = 18,814.89 × 3,055.75
  4. Step 4: Simplify right side
    12,543.40x = 57,493,600.12
  5. Step 5: Solve for x
    x = 57,493,600.12/12,543.40
  6. Step 6: Final answer
    x = 4,583.57

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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.