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Finding the Fourth Proportional to 21,804.39, 32,712.05 and 7,012.98

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Solution

The fourth proportional to 21,804.39, 32,712.05 and 7,012.98 is: 10,521.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,804.39 : 32,712.05 = 7,012.98 : x
  2. Step 2: Convert to fraction form
    21,804.39/32,712.05 = 7,012.98/x
  3. Step 3: Cross multiply
    21,804.39x = 32,712.05 × 7,012.98
  4. Step 4: Simplify right side
    21,804.39x = 229,408,969.94
  5. Step 5: Solve for x
    x = 229,408,969.94/21,804.39
  6. Step 6: Final answer
    x = 10,521.23

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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.