Home / 13,722.25-18,947.37-10,530.49

Finding the Fourth Proportional to 13,722.25, 18,947.37 and 10,530.49

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Solution

The fourth proportional to 13,722.25, 18,947.37 and 10,530.49 is: 14,540.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.25 : 18,947.37 = 10,530.49 : x
  2. Step 2: Convert to fraction form
    13,722.25/18,947.37 = 10,530.49/x
  3. Step 3: Cross multiply
    13,722.25x = 18,947.37 × 10,530.49
  4. Step 4: Simplify right side
    13,722.25x = 199,525,090.31
  5. Step 5: Solve for x
    x = 199,525,090.31/13,722.25
  6. Step 6: Final answer
    x = 14,540.26

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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.