Home / 13,038.88-17,991.30-7,372.12

Finding the Fourth Proportional to 13,038.88, 17,991.30 and 7,372.12

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Solution

The fourth proportional to 13,038.88, 17,991.30 and 7,372.12 is: 10,172.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,038.88 : 17,991.30 = 7,372.12 : x
  2. Step 2: Convert to fraction form
    13,038.88/17,991.30 = 7,372.12/x
  3. Step 3: Cross multiply
    13,038.88x = 17,991.30 × 7,372.12
  4. Step 4: Simplify right side
    13,038.88x = 132,634,022.56
  5. Step 5: Solve for x
    x = 132,634,022.56/13,038.88
  6. Step 6: Final answer
    x = 10,172.19

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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.