Home / 12,072.87-18,111.74-4,282.29

Finding the Fourth Proportional to 12,072.87, 18,111.74 and 4,282.29

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Solution

The fourth proportional to 12,072.87, 18,111.74 and 4,282.29 is: 6,424.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.87 : 18,111.74 = 4,282.29 : x
  2. Step 2: Convert to fraction form
    12,072.87/18,111.74 = 4,282.29/x
  3. Step 3: Cross multiply
    12,072.87x = 18,111.74 × 4,282.29
  4. Step 4: Simplify right side
    12,072.87x = 77,559,701.67
  5. Step 5: Solve for x
    x = 77,559,701.67/12,072.87
  6. Step 6: Final answer
    x = 6,424.30

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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.