Home / 21,621.36-29,839.11-12,064.32

Finding the Fourth Proportional to 21,621.36, 29,839.11 and 12,064.32

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Solution

The fourth proportional to 21,621.36, 29,839.11 and 12,064.32 is: 16,649.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.36 : 29,839.11 = 12,064.32 : x
  2. Step 2: Convert to fraction form
    21,621.36/29,839.11 = 12,064.32/x
  3. Step 3: Cross multiply
    21,621.36x = 29,839.11 × 12,064.32
  4. Step 4: Simplify right side
    21,621.36x = 359,988,571.56
  5. Step 5: Solve for x
    x = 359,988,571.56/21,621.36
  6. Step 6: Final answer
    x = 16,649.67

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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.