Home / 13,545.70-18,704.60-8,518.33

Finding the Fourth Proportional to 13,545.70, 18,704.60 and 8,518.33

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Solution

The fourth proportional to 13,545.70, 18,704.60 and 8,518.33 is: 11,762.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.70 : 18,704.60 = 8,518.33 : x
  2. Step 2: Convert to fraction form
    13,545.70/18,704.60 = 8,518.33/x
  3. Step 3: Cross multiply
    13,545.70x = 18,704.60 × 8,518.33
  4. Step 4: Simplify right side
    13,545.70x = 159,331,955.32
  5. Step 5: Solve for x
    x = 159,331,955.32/13,545.70
  6. Step 6: Final answer
    x = 11,762.55

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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.