Home / 12,712.48-19,055.12-4,811.28

Finding the Fourth Proportional to 12,712.48, 19,055.12 and 4,811.28

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Solution

The fourth proportional to 12,712.48, 19,055.12 and 4,811.28 is: 7,211.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.48 : 19,055.12 = 4,811.28 : x
  2. Step 2: Convert to fraction form
    12,712.48/19,055.12 = 4,811.28/x
  3. Step 3: Cross multiply
    12,712.48x = 19,055.12 × 4,811.28
  4. Step 4: Simplify right side
    12,712.48x = 91,679,517.75
  5. Step 5: Solve for x
    x = 91,679,517.75/12,712.48
  6. Step 6: Final answer
    x = 7,211.77

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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.