Home / 21,712.56-29,964.77-12,153.34

Finding the Fourth Proportional to 21,712.56, 29,964.77 and 12,153.34

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Solution

The fourth proportional to 21,712.56, 29,964.77 and 12,153.34 is: 16,772.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.56 : 29,964.77 = 12,153.34 : x
  2. Step 2: Convert to fraction form
    21,712.56/29,964.77 = 12,153.34/x
  3. Step 3: Cross multiply
    21,712.56x = 29,964.77 × 12,153.34
  4. Step 4: Simplify right side
    21,712.56x = 364,172,037.83
  5. Step 5: Solve for x
    x = 364,172,037.83/21,712.56
  6. Step 6: Final answer
    x = 16,772.41

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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.