Home / 13,529.21-18,670.44-7,479.36

Finding the Fourth Proportional to 13,529.21, 18,670.44 and 7,479.36

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Solution

The fourth proportional to 13,529.21, 18,670.44 and 7,479.36 is: 10,321.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,529.21 : 18,670.44 = 7,479.36 : x
  2. Step 2: Convert to fraction form
    13,529.21/18,670.44 = 7,479.36/x
  3. Step 3: Cross multiply
    13,529.21x = 18,670.44 × 7,479.36
  4. Step 4: Simplify right side
    13,529.21x = 139,642,911.01
  5. Step 5: Solve for x
    x = 139,642,911.01/13,529.21
  6. Step 6: Final answer
    x = 10,321.58

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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.