Home / 38,913.93-58,379.40-12,621.33

Finding the Fourth Proportional to 38,913.93, 58,379.40 and 12,621.33

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Solution

The fourth proportional to 38,913.93, 58,379.40 and 12,621.33 is: 18,934.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,913.93 : 58,379.40 = 12,621.33 : x
  2. Step 2: Convert to fraction form
    38,913.93/58,379.40 = 12,621.33/x
  3. Step 3: Cross multiply
    38,913.93x = 58,379.40 × 12,621.33
  4. Step 4: Simplify right side
    38,913.93x = 736,825,672.60
  5. Step 5: Solve for x
    x = 736,825,672.60/38,913.93
  6. Step 6: Final answer
    x = 18,934.75

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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.