Home / 12,388.29-18,578.51-4,066.45

Finding the Fourth Proportional to 12,388.29, 18,578.51 and 4,066.45

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Solution

The fourth proportional to 12,388.29, 18,578.51 and 4,066.45 is: 6,098.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.29 : 18,578.51 = 4,066.45 : x
  2. Step 2: Convert to fraction form
    12,388.29/18,578.51 = 4,066.45/x
  3. Step 3: Cross multiply
    12,388.29x = 18,578.51 × 4,066.45
  4. Step 4: Simplify right side
    12,388.29x = 75,548,657.84
  5. Step 5: Solve for x
    x = 75,548,657.84/12,388.29
  6. Step 6: Final answer
    x = 6,098.39

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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.