Home / 21,712.60-29,964.99-12,153.45

Finding the Fourth Proportional to 21,712.60, 29,964.99 and 12,153.45

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Solution

The fourth proportional to 21,712.60, 29,964.99 and 12,153.45 is: 16,772.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.60 : 29,964.99 = 12,153.45 : x
  2. Step 2: Convert to fraction form
    21,712.60/29,964.99 = 12,153.45/x
  3. Step 3: Cross multiply
    21,712.60x = 29,964.99 × 12,153.45
  4. Step 4: Simplify right side
    21,712.60x = 364,178,007.72
  5. Step 5: Solve for x
    x = 364,178,007.72/21,712.60
  6. Step 6: Final answer
    x = 16,772.66

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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.