Home / 20,704.20-31,056.13-5,913.10

Finding the Fourth Proportional to 20,704.20, 31,056.13 and 5,913.10

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Solution

The fourth proportional to 20,704.20, 31,056.13 and 5,913.10 is: 8,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.20 : 31,056.13 = 5,913.10 : x
  2. Step 2: Convert to fraction form
    20,704.20/31,056.13 = 5,913.10/x
  3. Step 3: Cross multiply
    20,704.20x = 31,056.13 × 5,913.10
  4. Step 4: Simplify right side
    20,704.20x = 183,638,002.30
  5. Step 5: Solve for x
    x = 183,638,002.30/20,704.20
  6. Step 6: Final answer
    x = 8,869.60

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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.