Home / 21,033.63-31,550.31-6,989.67

Finding the Fourth Proportional to 21,033.63, 31,550.31 and 6,989.67

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Solution

The fourth proportional to 21,033.63, 31,550.31 and 6,989.67 is: 10,484.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,033.63 : 31,550.31 = 6,989.67 : x
  2. Step 2: Convert to fraction form
    21,033.63/31,550.31 = 6,989.67/x
  3. Step 3: Cross multiply
    21,033.63x = 31,550.31 × 6,989.67
  4. Step 4: Simplify right side
    21,033.63x = 220,526,255.30
  5. Step 5: Solve for x
    x = 220,526,255.30/21,033.63
  6. Step 6: Final answer
    x = 10,484.46

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Similar ratio
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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.