Home / 12,375.64-18,559.14-4,978.18

Finding the Fourth Proportional to 12,375.64, 18,559.14 and 4,978.18

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Solution

The fourth proportional to 12,375.64, 18,559.14 and 4,978.18 is: 7,465.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,375.64 : 18,559.14 = 4,978.18 : x
  2. Step 2: Convert to fraction form
    12,375.64/18,559.14 = 4,978.18/x
  3. Step 3: Cross multiply
    12,375.64x = 18,559.14 × 4,978.18
  4. Step 4: Simplify right side
    12,375.64x = 92,390,739.57
  5. Step 5: Solve for x
    x = 92,390,739.57/12,375.64
  6. Step 6: Final answer
    x = 7,465.53

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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.