Home / 30,345.48-41,880.60-18,408.12

Finding the Fourth Proportional to 30,345.48, 41,880.60 and 18,408.12

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Solution

The fourth proportional to 30,345.48, 41,880.60 and 18,408.12 is: 25,405.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.48 : 41,880.60 = 18,408.12 : x
  2. Step 2: Convert to fraction form
    30,345.48/41,880.60 = 18,408.12/x
  3. Step 3: Cross multiply
    30,345.48x = 41,880.60 × 18,408.12
  4. Step 4: Simplify right side
    30,345.48x = 770,943,110.47
  5. Step 5: Solve for x
    x = 770,943,110.47/30,345.48
  6. Step 6: Final answer
    x = 25,405.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.