Home / 12,113.82-16,718.67-6,808.91

Finding the Fourth Proportional to 12,113.82, 16,718.67 and 6,808.91

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Solution

The fourth proportional to 12,113.82, 16,718.67 and 6,808.91 is: 9,397.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113.82 : 16,718.67 = 6,808.91 : x
  2. Step 2: Convert to fraction form
    12,113.82/16,718.67 = 6,808.91/x
  3. Step 3: Cross multiply
    12,113.82x = 16,718.67 × 6,808.91
  4. Step 4: Simplify right side
    12,113.82x = 113,835,835.76
  5. Step 5: Solve for x
    x = 113,835,835.76/12,113.82
  6. Step 6: Final answer
    x = 9,397.19

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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.