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Finding the Fourth Proportional to 12,351.90, 18,530.55 and 6,114.90

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Solution

The fourth proportional to 12,351.90, 18,530.55 and 6,114.90 is: 9,173.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,351.90 : 18,530.55 = 6,114.90 : x
  2. Step 2: Convert to fraction form
    12,351.90/18,530.55 = 6,114.90/x
  3. Step 3: Cross multiply
    12,351.90x = 18,530.55 × 6,114.90
  4. Step 4: Simplify right side
    12,351.90x = 113,312,460.20
  5. Step 5: Solve for x
    x = 113,312,460.20/12,351.90
  6. Step 6: Final answer
    x = 9,173.69

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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.