Home / 13,697.44-18,902.40-7,409.80

Finding the Fourth Proportional to 13,697.44, 18,902.40 and 7,409.80

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Solution

The fourth proportional to 13,697.44, 18,902.40 and 7,409.80 is: 10,225.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.44 : 18,902.40 = 7,409.80 : x
  2. Step 2: Convert to fraction form
    13,697.44/18,902.40 = 7,409.80/x
  3. Step 3: Cross multiply
    13,697.44x = 18,902.40 × 7,409.80
  4. Step 4: Simplify right side
    13,697.44x = 140,063,003.52
  5. Step 5: Solve for x
    x = 140,063,003.52/13,697.44
  6. Step 6: Final answer
    x = 10,225.49

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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.