Home / 22,990.80-31,724.94-12,917.64

Finding the Fourth Proportional to 22,990.80, 31,724.94 and 12,917.64

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Solution

The fourth proportional to 22,990.80, 31,724.94 and 12,917.64 is: 17,825.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,990.80 : 31,724.94 = 12,917.64 : x
  2. Step 2: Convert to fraction form
    22,990.80/31,724.94 = 12,917.64/x
  3. Step 3: Cross multiply
    22,990.80x = 31,724.94 × 12,917.64
  4. Step 4: Simplify right side
    22,990.80x = 409,811,353.94
  5. Step 5: Solve for x
    x = 409,811,353.94/22,990.80
  6. Step 6: Final answer
    x = 17,825.01

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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.