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Finding the Fourth Proportional to 13,073.58, 18,040.95 and 7,408.56

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Solution

The fourth proportional to 13,073.58, 18,040.95 and 7,408.56 is: 10,223.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,073.58 : 18,040.95 = 7,408.56 : x
  2. Step 2: Convert to fraction form
    13,073.58/18,040.95 = 7,408.56/x
  3. Step 3: Cross multiply
    13,073.58x = 18,040.95 × 7,408.56
  4. Step 4: Simplify right side
    13,073.58x = 133,657,460.53
  5. Step 5: Solve for x
    x = 133,657,460.53/13,073.58
  6. Step 6: Final answer
    x = 10,223.48

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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.