Home / 13,107.03-18,085.64-8,072.07

Finding the Fourth Proportional to 13,107.03, 18,085.64 and 8,072.07

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Solution

The fourth proportional to 13,107.03, 18,085.64 and 8,072.07 is: 11,138.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,107.03 : 18,085.64 = 8,072.07 : x
  2. Step 2: Convert to fraction form
    13,107.03/18,085.64 = 8,072.07/x
  3. Step 3: Cross multiply
    13,107.03x = 18,085.64 × 8,072.07
  4. Step 4: Simplify right side
    13,107.03x = 145,988,511.71
  5. Step 5: Solve for x
    x = 145,988,511.71/13,107.03
  6. Step 6: Final answer
    x = 11,138.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.