Home / 21,905.84-32,817.22-13,002.35

Finding the Fourth Proportional to 21,905.84, 32,817.22 and 13,002.35

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Solution

The fourth proportional to 21,905.84, 32,817.22 and 13,002.35 is: 19,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.84 : 32,817.22 = 13,002.35 : x
  2. Step 2: Convert to fraction form
    21,905.84/32,817.22 = 13,002.35/x
  3. Step 3: Cross multiply
    21,905.84x = 32,817.22 × 13,002.35
  4. Step 4: Simplify right side
    21,905.84x = 426,700,783.88
  5. Step 5: Solve for x
    x = 426,700,783.88/21,905.84
  6. Step 6: Final answer
    x = 19,478.86

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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.