Home / 12,728.37-19,084.88-5,707.11

Finding the Fourth Proportional to 12,728.37, 19,084.88 and 5,707.11

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Solution

The fourth proportional to 12,728.37, 19,084.88 and 5,707.11 is: 8,557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.37 : 19,084.88 = 5,707.11 : x
  2. Step 2: Convert to fraction form
    12,728.37/19,084.88 = 5,707.11/x
  3. Step 3: Cross multiply
    12,728.37x = 19,084.88 × 5,707.11
  4. Step 4: Simplify right side
    12,728.37x = 108,919,509.50
  5. Step 5: Solve for x
    x = 108,919,509.50/12,728.37
  6. Step 6: Final answer
    x = 8,557.22

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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.