Home / 13,769.79-19,010.37-9,989.32

Finding the Fourth Proportional to 13,769.79, 19,010.37 and 9,989.32

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Solution

The fourth proportional to 13,769.79, 19,010.37 and 9,989.32 is: 13,791.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769.79 : 19,010.37 = 9,989.32 : x
  2. Step 2: Convert to fraction form
    13,769.79/19,010.37 = 9,989.32/x
  3. Step 3: Cross multiply
    13,769.79x = 19,010.37 × 9,989.32
  4. Step 4: Simplify right side
    13,769.79x = 189,900,669.25
  5. Step 5: Solve for x
    x = 189,900,669.25/13,769.79
  6. Step 6: Final answer
    x = 13,791.11

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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.