Home / 12,729.08-19,097.15-5,331.78

Finding the Fourth Proportional to 12,729.08, 19,097.15 and 5,331.78

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Solution

The fourth proportional to 12,729.08, 19,097.15 and 5,331.78 is: 7,999.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.08 : 19,097.15 = 5,331.78 : x
  2. Step 2: Convert to fraction form
    12,729.08/19,097.15 = 5,331.78/x
  3. Step 3: Cross multiply
    12,729.08x = 19,097.15 × 5,331.78
  4. Step 4: Simplify right side
    12,729.08x = 101,821,802.43
  5. Step 5: Solve for x
    x = 101,821,802.43/12,729.08
  6. Step 6: Final answer
    x = 7,999.15

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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.