Home / 13,338.81-18,407.07-8,625.78

Finding the Fourth Proportional to 13,338.81, 18,407.07 and 8,625.78

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Solution

The fourth proportional to 13,338.81, 18,407.07 and 8,625.78 is: 11,903.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.81 : 18,407.07 = 8,625.78 : x
  2. Step 2: Convert to fraction form
    13,338.81/18,407.07 = 8,625.78/x
  3. Step 3: Cross multiply
    13,338.81x = 18,407.07 × 8,625.78
  4. Step 4: Simplify right side
    13,338.81x = 158,775,336.26
  5. Step 5: Solve for x
    x = 158,775,336.26/13,338.81
  6. Step 6: Final answer
    x = 11,903.26

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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.