Home / 13,677.19-18,874.35-7,708.91

Finding the Fourth Proportional to 13,677.19, 18,874.35 and 7,708.91

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Solution

The fourth proportional to 13,677.19, 18,874.35 and 7,708.91 is: 10,638.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.19 : 18,874.35 = 7,708.91 : x
  2. Step 2: Convert to fraction form
    13,677.19/18,874.35 = 7,708.91/x
  3. Step 3: Cross multiply
    13,677.19x = 18,874.35 × 7,708.91
  4. Step 4: Simplify right side
    13,677.19x = 145,500,571.09
  5. Step 5: Solve for x
    x = 145,500,571.09/13,677.19
  6. Step 6: Final answer
    x = 10,638.19

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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.