Home / 12,636.03-17,438.49-6,970.79

Finding the Fourth Proportional to 12,636.03, 17,438.49 and 6,970.79

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Solution

The fourth proportional to 12,636.03, 17,438.49 and 6,970.79 is: 9,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.03 : 17,438.49 = 6,970.79 : x
  2. Step 2: Convert to fraction form
    12,636.03/17,438.49 = 6,970.79/x
  3. Step 3: Cross multiply
    12,636.03x = 17,438.49 × 6,970.79
  4. Step 4: Simplify right side
    12,636.03x = 121,560,095.30
  5. Step 5: Solve for x
    x = 121,560,095.30/12,636.03
  6. Step 6: Final answer
    x = 9,620.11

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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.