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Finding the Fourth Proportional to 12,950.19, 17,874.54 and 7,646.67

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Solution

The fourth proportional to 12,950.19, 17,874.54 and 7,646.67 is: 10,554.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,950.19 : 17,874.54 = 7,646.67 : x
  2. Step 2: Convert to fraction form
    12,950.19/17,874.54 = 7,646.67/x
  3. Step 3: Cross multiply
    12,950.19x = 17,874.54 × 7,646.67
  4. Step 4: Simplify right side
    12,950.19x = 136,680,708.78
  5. Step 5: Solve for x
    x = 136,680,708.78/12,950.19
  6. Step 6: Final answer
    x = 10,554.34

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Double scale
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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.