Home / 21,813.36-32,730.80-8,665.44

Finding the Fourth Proportional to 21,813.36, 32,730.80 and 8,665.44

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Solution

The fourth proportional to 21,813.36, 32,730.80 and 8,665.44 is: 13,002.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,813.36 : 32,730.80 = 8,665.44 : x
  2. Step 2: Convert to fraction form
    21,813.36/32,730.80 = 8,665.44/x
  3. Step 3: Cross multiply
    21,813.36x = 32,730.80 × 8,665.44
  4. Step 4: Simplify right side
    21,813.36x = 283,626,783.55
  5. Step 5: Solve for x
    x = 283,626,783.55/21,813.36
  6. Step 6: Final answer
    x = 13,002.43

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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.