Home / 21,439.68-29,586.72-12,008.16

Finding the Fourth Proportional to 21,439.68, 29,586.72 and 12,008.16

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Solution

The fourth proportional to 21,439.68, 29,586.72 and 12,008.16 is: 16,571.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.68 : 29,586.72 = 12,008.16 : x
  2. Step 2: Convert to fraction form
    21,439.68/29,586.72 = 12,008.16/x
  3. Step 3: Cross multiply
    21,439.68x = 29,586.72 × 12,008.16
  4. Step 4: Simplify right side
    21,439.68x = 355,282,067.64
  5. Step 5: Solve for x
    x = 355,282,067.64/21,439.68
  6. Step 6: Final answer
    x = 16,571.24

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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.