Home / 13,236.96-18,276-10,109.28

Finding the Fourth Proportional to 13,236.96, 18,276 and 10,109.28

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Solution

The fourth proportional to 13,236.96, 18,276 and 10,109.28 is: 13,957.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.96 : 18,276 = 10,109.28 : x
  2. Step 2: Convert to fraction form
    13,236.96/18,276 = 10,109.28/x
  3. Step 3: Cross multiply
    13,236.96x = 18,276 × 10,109.28
  4. Step 4: Simplify right side
    13,236.96x = 184,757,201.28
  5. Step 5: Solve for x
    x = 184,757,201.28/13,236.96
  6. Step 6: Final answer
    x = 13,957.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.