Home / 21,074.82-31,587.93-9,984.30

Finding the Fourth Proportional to 21,074.82, 31,587.93 and 9,984.30

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Solution

The fourth proportional to 21,074.82, 31,587.93 and 9,984.30 is: 14,964.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.82 : 31,587.93 = 9,984.30 : x
  2. Step 2: Convert to fraction form
    21,074.82/31,587.93 = 9,984.30/x
  3. Step 3: Cross multiply
    21,074.82x = 31,587.93 × 9,984.30
  4. Step 4: Simplify right side
    21,074.82x = 315,383,369.50
  5. Step 5: Solve for x
    x = 315,383,369.50/21,074.82
  6. Step 6: Final answer
    x = 14,964.94

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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.