Home / 13,428.37-18,533.37-11,186.70

Finding the Fourth Proportional to 13,428.37, 18,533.37 and 11,186.70

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Solution

The fourth proportional to 13,428.37, 18,533.37 and 11,186.70 is: 15,439.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.37 : 18,533.37 = 11,186.70 : x
  2. Step 2: Convert to fraction form
    13,428.37/18,533.37 = 11,186.70/x
  3. Step 3: Cross multiply
    13,428.37x = 18,533.37 × 11,186.70
  4. Step 4: Simplify right side
    13,428.37x = 207,327,157.51
  5. Step 5: Solve for x
    x = 207,327,157.51/13,428.37
  6. Step 6: Final answer
    x = 15,439.49

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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.