Home / 13,699.01-18,887.42-11,178.56

Finding the Fourth Proportional to 13,699.01, 18,887.42 and 11,178.56

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Solution

The fourth proportional to 13,699.01, 18,887.42 and 11,178.56 is: 15,412.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.01 : 18,887.42 = 11,178.56 : x
  2. Step 2: Convert to fraction form
    13,699.01/18,887.42 = 11,178.56/x
  3. Step 3: Cross multiply
    13,699.01x = 18,887.42 × 11,178.56
  4. Step 4: Simplify right side
    13,699.01x = 211,134,007.39
  5. Step 5: Solve for x
    x = 211,134,007.39/13,699.01
  6. Step 6: Final answer
    x = 15,412.36

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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.