Home / 21,334.32-29,467.80-15,074.64

Finding the Fourth Proportional to 21,334.32, 29,467.80 and 15,074.64

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Solution

The fourth proportional to 21,334.32, 29,467.80 and 15,074.64 is: 20,821.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.32 : 29,467.80 = 15,074.64 : x
  2. Step 2: Convert to fraction form
    21,334.32/29,467.80 = 15,074.64/x
  3. Step 3: Cross multiply
    21,334.32x = 29,467.80 × 15,074.64
  4. Step 4: Simplify right side
    21,334.32x = 444,216,476.59
  5. Step 5: Solve for x
    x = 444,216,476.59/21,334.32
  6. Step 6: Final answer
    x = 20,821.68

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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.