Home / 13,211.06-18,243.60-8,503.52

Finding the Fourth Proportional to 13,211.06, 18,243.60 and 8,503.52

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Solution

The fourth proportional to 13,211.06, 18,243.60 and 8,503.52 is: 11,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.06 : 18,243.60 = 8,503.52 : x
  2. Step 2: Convert to fraction form
    13,211.06/18,243.60 = 8,503.52/x
  3. Step 3: Cross multiply
    13,211.06x = 18,243.60 × 8,503.52
  4. Step 4: Simplify right side
    13,211.06x = 155,134,817.47
  5. Step 5: Solve for x
    x = 155,134,817.47/13,211.06
  6. Step 6: Final answer
    x = 11,742.80

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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.