Home / 13,339.36-18,408.06-7,370.90

Finding the Fourth Proportional to 13,339.36, 18,408.06 and 7,370.90

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Solution

The fourth proportional to 13,339.36, 18,408.06 and 7,370.90 is: 10,171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.36 : 18,408.06 = 7,370.90 : x
  2. Step 2: Convert to fraction form
    13,339.36/18,408.06 = 7,370.90/x
  3. Step 3: Cross multiply
    13,339.36x = 18,408.06 × 7,370.90
  4. Step 4: Simplify right side
    13,339.36x = 135,683,946.44
  5. Step 5: Solve for x
    x = 135,683,946.44/13,339.36
  6. Step 6: Final answer
    x = 10,171.70

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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.