Home / 21,360.21-32,029.83-12,477.77

Finding the Fourth Proportional to 21,360.21, 32,029.83 and 12,477.77

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Solution

The fourth proportional to 21,360.21, 32,029.83 and 12,477.77 is: 18,710.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.21 : 32,029.83 = 12,477.77 : x
  2. Step 2: Convert to fraction form
    21,360.21/32,029.83 = 12,477.77/x
  3. Step 3: Cross multiply
    21,360.21x = 32,029.83 × 12,477.77
  4. Step 4: Simplify right side
    21,360.21x = 399,660,851.88
  5. Step 5: Solve for x
    x = 399,660,851.88/21,360.21
  6. Step 6: Final answer
    x = 18,710.53

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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.