Home / 12,135.42-18,207.51-4,239.10

Finding the Fourth Proportional to 12,135.42, 18,207.51 and 4,239.10

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Solution

The fourth proportional to 12,135.42, 18,207.51 and 4,239.10 is: 6,360.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.42 : 18,207.51 = 4,239.10 : x
  2. Step 2: Convert to fraction form
    12,135.42/18,207.51 = 4,239.10/x
  3. Step 3: Cross multiply
    12,135.42x = 18,207.51 × 4,239.10
  4. Step 4: Simplify right side
    12,135.42x = 77,183,455.64
  5. Step 5: Solve for x
    x = 77,183,455.64/12,135.42
  6. Step 6: Final answer
    x = 6,360.18

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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.