Home / 13,312.80-18,372.56-7,649.37

Finding the Fourth Proportional to 13,312.80, 18,372.56 and 7,649.37

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Solution

The fourth proportional to 13,312.80, 18,372.56 and 7,649.37 is: 10,556.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.80 : 18,372.56 = 7,649.37 : x
  2. Step 2: Convert to fraction form
    13,312.80/18,372.56 = 7,649.37/x
  3. Step 3: Cross multiply
    13,312.80x = 18,372.56 × 7,649.37
  4. Step 4: Simplify right side
    13,312.80x = 140,538,471.04
  5. Step 5: Solve for x
    x = 140,538,471.04/13,312.80
  6. Step 6: Final answer
    x = 10,556.64

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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.