Home / 21,409.70-32,117.63-6,619.77

Finding the Fourth Proportional to 21,409.70, 32,117.63 and 6,619.77

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Solution

The fourth proportional to 21,409.70, 32,117.63 and 6,619.77 is: 9,930.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.70 : 32,117.63 = 6,619.77 : x
  2. Step 2: Convert to fraction form
    21,409.70/32,117.63 = 6,619.77/x
  3. Step 3: Cross multiply
    21,409.70x = 32,117.63 × 6,619.77
  4. Step 4: Simplify right side
    21,409.70x = 212,611,290.45
  5. Step 5: Solve for x
    x = 212,611,290.45/21,409.70
  6. Step 6: Final answer
    x = 9,930.61

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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.