Home / 13,435.48-18,539.56-7,769.36

Finding the Fourth Proportional to 13,435.48, 18,539.56 and 7,769.36

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Solution

The fourth proportional to 13,435.48, 18,539.56 and 7,769.36 is: 10,720.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.48 : 18,539.56 = 7,769.36 : x
  2. Step 2: Convert to fraction form
    13,435.48/18,539.56 = 7,769.36/x
  3. Step 3: Cross multiply
    13,435.48x = 18,539.56 × 7,769.36
  4. Step 4: Simplify right side
    13,435.48x = 144,040,515.88
  5. Step 5: Solve for x
    x = 144,040,515.88/13,435.48
  6. Step 6: Final answer
    x = 10,720.91

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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.