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Finding the Fourth Proportional to 19,388.77, 29,088.99 and 6,907.17

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Solution

The fourth proportional to 19,388.77, 29,088.99 and 6,907.17 is: 10,362.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,388.77 : 29,088.99 = 6,907.17 : x
  2. Step 2: Convert to fraction form
    19,388.77/29,088.99 = 6,907.17/x
  3. Step 3: Cross multiply
    19,388.77x = 29,088.99 × 6,907.17
  4. Step 4: Simplify right side
    19,388.77x = 200,922,453.61
  5. Step 5: Solve for x
    x = 200,922,453.61/19,388.77
  6. Step 6: Final answer
    x = 10,362.83

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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.