Home / 12,243.78-18,365.27-5,318.28

Finding the Fourth Proportional to 12,243.78, 18,365.27 and 5,318.28

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Solution

The fourth proportional to 12,243.78, 18,365.27 and 5,318.28 is: 7,977.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.78 : 18,365.27 = 5,318.28 : x
  2. Step 2: Convert to fraction form
    12,243.78/18,365.27 = 5,318.28/x
  3. Step 3: Cross multiply
    12,243.78x = 18,365.27 × 5,318.28
  4. Step 4: Simplify right side
    12,243.78x = 97,671,621.54
  5. Step 5: Solve for x
    x = 97,671,621.54/12,243.78
  6. Step 6: Final answer
    x = 7,977.24

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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.