Home / 21,811.55-32,730.75-8,664.98

Finding the Fourth Proportional to 21,811.55, 32,730.75 and 8,664.98

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Solution

The fourth proportional to 21,811.55, 32,730.75 and 8,664.98 is: 13,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811.55 : 32,730.75 = 8,664.98 : x
  2. Step 2: Convert to fraction form
    21,811.55/32,730.75 = 8,664.98/x
  3. Step 3: Cross multiply
    21,811.55x = 32,730.75 × 8,664.98
  4. Step 4: Simplify right side
    21,811.55x = 283,611,130.48
  5. Step 5: Solve for x
    x = 283,611,130.48/21,811.55
  6. Step 6: Final answer
    x = 13,002.80

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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.