Home / 12,368.40-18,520.20-9,063.60

Finding the Fourth Proportional to 12,368.40, 18,520.20 and 9,063.60

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Solution

The fourth proportional to 12,368.40, 18,520.20 and 9,063.60 is: 13,571.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.40 : 18,520.20 = 9,063.60 : x
  2. Step 2: Convert to fraction form
    12,368.40/18,520.20 = 9,063.60/x
  3. Step 3: Cross multiply
    12,368.40x = 18,520.20 × 9,063.60
  4. Step 4: Simplify right side
    12,368.40x = 167,859,684.72
  5. Step 5: Solve for x
    x = 167,859,684.72/12,368.40
  6. Step 6: Final answer
    x = 13,571.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.