Home / 21,712.29-29,964.41-12,153.01

Finding the Fourth Proportional to 21,712.29, 29,964.41 and 12,153.01

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Solution

The fourth proportional to 21,712.29, 29,964.41 and 12,153.01 is: 16,771.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.29 : 29,964.41 = 12,153.01 : x
  2. Step 2: Convert to fraction form
    21,712.29/29,964.41 = 12,153.01/x
  3. Step 3: Cross multiply
    21,712.29x = 29,964.41 × 12,153.01
  4. Step 4: Simplify right side
    21,712.29x = 364,157,563.79
  5. Step 5: Solve for x
    x = 364,157,563.79/21,712.29
  6. Step 6: Final answer
    x = 16,771.96

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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.