Home / 12,543.94-18,815.01-5,146.39

Finding the Fourth Proportional to 12,543.94, 18,815.01 and 5,146.39

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Solution

The fourth proportional to 12,543.94, 18,815.01 and 5,146.39 is: 7,719.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.94 : 18,815.01 = 5,146.39 : x
  2. Step 2: Convert to fraction form
    12,543.94/18,815.01 = 5,146.39/x
  3. Step 3: Cross multiply
    12,543.94x = 18,815.01 × 5,146.39
  4. Step 4: Simplify right side
    12,543.94x = 96,829,379.31
  5. Step 5: Solve for x
    x = 96,829,379.31/12,543.94
  6. Step 6: Final answer
    x = 7,719.22

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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.