Home / 21,581.64-29,783.24-12,150.56

Finding the Fourth Proportional to 21,581.64, 29,783.24 and 12,150.56

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Solution

The fourth proportional to 21,581.64, 29,783.24 and 12,150.56 is: 16,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.64 : 29,783.24 = 12,150.56 : x
  2. Step 2: Convert to fraction form
    21,581.64/29,783.24 = 12,150.56/x
  3. Step 3: Cross multiply
    21,581.64x = 29,783.24 × 12,150.56
  4. Step 4: Simplify right side
    21,581.64x = 361,883,044.61
  5. Step 5: Solve for x
    x = 361,883,044.61/21,581.64
  6. Step 6: Final answer
    x = 16,768.10

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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.