Home / 13,434.09-18,539.42-7,768.29

Finding the Fourth Proportional to 13,434.09, 18,539.42 and 7,768.29

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Solution

The fourth proportional to 13,434.09, 18,539.42 and 7,768.29 is: 10,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.09 : 18,539.42 = 7,768.29 : x
  2. Step 2: Convert to fraction form
    13,434.09/18,539.42 = 7,768.29/x
  3. Step 3: Cross multiply
    13,434.09x = 18,539.42 × 7,768.29
  4. Step 4: Simplify right side
    13,434.09x = 144,019,687.22
  5. Step 5: Solve for x
    x = 144,019,687.22/13,434.09
  6. Step 6: Final answer
    x = 10,720.46

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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.