Home / 12,447.90-18,670.77-4,125.18

Finding the Fourth Proportional to 12,447.90, 18,670.77 and 4,125.18

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Solution

The fourth proportional to 12,447.90, 18,670.77 and 4,125.18 is: 6,187.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,447.90 : 18,670.77 = 4,125.18 : x
  2. Step 2: Convert to fraction form
    12,447.90/18,670.77 = 4,125.18/x
  3. Step 3: Cross multiply
    12,447.90x = 18,670.77 × 4,125.18
  4. Step 4: Simplify right side
    12,447.90x = 77,020,286.99
  5. Step 5: Solve for x
    x = 77,020,286.99/12,447.90
  6. Step 6: Final answer
    x = 6,187.41

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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.