Home / 12,712.69-19,069.31-8,949.09

Finding the Fourth Proportional to 12,712.69, 19,069.31 and 8,949.09

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Solution

The fourth proportional to 12,712.69, 19,069.31 and 8,949.09 is: 13,423.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.69 : 19,069.31 = 8,949.09 : x
  2. Step 2: Convert to fraction form
    12,712.69/19,069.31 = 8,949.09/x
  3. Step 3: Cross multiply
    12,712.69x = 19,069.31 × 8,949.09
  4. Step 4: Simplify right side
    12,712.69x = 170,652,831.34
  5. Step 5: Solve for x
    x = 170,652,831.34/12,712.69
  6. Step 6: Final answer
    x = 13,423.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.