Home / 12,728.53-19,085.11-5,707.27

Finding the Fourth Proportional to 12,728.53, 19,085.11 and 5,707.27

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Solution

The fourth proportional to 12,728.53, 19,085.11 and 5,707.27 is: 8,557.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.53 : 19,085.11 = 5,707.27 : x
  2. Step 2: Convert to fraction form
    12,728.53/19,085.11 = 5,707.27/x
  3. Step 3: Cross multiply
    12,728.53x = 19,085.11 × 5,707.27
  4. Step 4: Simplify right side
    12,728.53x = 108,923,828.04
  5. Step 5: Solve for x
    x = 108,923,828.04/12,728.53
  6. Step 6: Final answer
    x = 8,557.46

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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.