Home / 13,408.03-18,503.13-7,440.56

Finding the Fourth Proportional to 13,408.03, 18,503.13 and 7,440.56

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Solution

The fourth proportional to 13,408.03, 18,503.13 and 7,440.56 is: 10,268.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408.03 : 18,503.13 = 7,440.56 : x
  2. Step 2: Convert to fraction form
    13,408.03/18,503.13 = 7,440.56/x
  3. Step 3: Cross multiply
    13,408.03x = 18,503.13 × 7,440.56
  4. Step 4: Simplify right side
    13,408.03x = 137,673,653.73
  5. Step 5: Solve for x
    x = 137,673,653.73/13,408.03
  6. Step 6: Final answer
    x = 10,268.00

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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.