Home / 21,449.64-29,601.08-12,018.80

Finding the Fourth Proportional to 21,449.64, 29,601.08 and 12,018.80

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Solution

The fourth proportional to 21,449.64, 29,601.08 and 12,018.80 is: 16,586.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,449.64 : 29,601.08 = 12,018.80 : x
  2. Step 2: Convert to fraction form
    21,449.64/29,601.08 = 12,018.80/x
  3. Step 3: Cross multiply
    21,449.64x = 29,601.08 × 12,018.80
  4. Step 4: Simplify right side
    21,449.64x = 355,769,460.30
  5. Step 5: Solve for x
    x = 355,769,460.30/21,449.64
  6. Step 6: Final answer
    x = 16,586.27

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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.