Home / 13,306.81-18,365.06-7,643.33

Finding the Fourth Proportional to 13,306.81, 18,365.06 and 7,643.33

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Solution

The fourth proportional to 13,306.81, 18,365.06 and 7,643.33 is: 10,548.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306.81 : 18,365.06 = 7,643.33 : x
  2. Step 2: Convert to fraction form
    13,306.81/18,365.06 = 7,643.33/x
  3. Step 3: Cross multiply
    13,306.81x = 18,365.06 × 7,643.33
  4. Step 4: Simplify right side
    13,306.81x = 140,370,214.05
  5. Step 5: Solve for x
    x = 140,370,214.05/13,306.81
  6. Step 6: Final answer
    x = 10,548.75

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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.