Home / 21,291.42-31,940.98-8,804.67

Finding the Fourth Proportional to 21,291.42, 31,940.98 and 8,804.67

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Solution

The fourth proportional to 21,291.42, 31,940.98 and 8,804.67 is: 13,208.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.42 : 31,940.98 = 8,804.67 : x
  2. Step 2: Convert to fraction form
    21,291.42/31,940.98 = 8,804.67/x
  3. Step 3: Cross multiply
    21,291.42x = 31,940.98 × 8,804.67
  4. Step 4: Simplify right side
    21,291.42x = 281,229,628.67
  5. Step 5: Solve for x
    x = 281,229,628.67/21,291.42
  6. Step 6: Final answer
    x = 13,208.59

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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.