Home / 21,532.94-29,718.60-12,579.20

Finding the Fourth Proportional to 21,532.94, 29,718.60 and 12,579.20

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Solution

The fourth proportional to 21,532.94, 29,718.60 and 12,579.20 is: 17,361.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,532.94 : 29,718.60 = 12,579.20 : x
  2. Step 2: Convert to fraction form
    21,532.94/29,718.60 = 12,579.20/x
  3. Step 3: Cross multiply
    21,532.94x = 29,718.60 × 12,579.20
  4. Step 4: Simplify right side
    21,532.94x = 373,836,213.12
  5. Step 5: Solve for x
    x = 373,836,213.12/21,532.94
  6. Step 6: Final answer
    x = 17,361.13

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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.