Home / 20,984.58-31,477.02-7,836.84

Finding the Fourth Proportional to 20,984.58, 31,477.02 and 7,836.84

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Solution

The fourth proportional to 20,984.58, 31,477.02 and 7,836.84 is: 11,755.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.58 : 31,477.02 = 7,836.84 : x
  2. Step 2: Convert to fraction form
    20,984.58/31,477.02 = 7,836.84/x
  3. Step 3: Cross multiply
    20,984.58x = 31,477.02 × 7,836.84
  4. Step 4: Simplify right side
    20,984.58x = 246,680,369.42
  5. Step 5: Solve for x
    x = 246,680,369.42/20,984.58
  6. Step 6: Final answer
    x = 11,755.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.