Home / 20,970.10-31,457.33-6,734.98

Finding the Fourth Proportional to 20,970.10, 31,457.33 and 6,734.98

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Solution

The fourth proportional to 20,970.10, 31,457.33 and 6,734.98 is: 10,103.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.10 : 31,457.33 = 6,734.98 : x
  2. Step 2: Convert to fraction form
    20,970.10/31,457.33 = 6,734.98/x
  3. Step 3: Cross multiply
    20,970.10x = 31,457.33 × 6,734.98
  4. Step 4: Simplify right side
    20,970.10x = 211,864,297.44
  5. Step 5: Solve for x
    x = 211,864,297.44/20,970.10
  6. Step 6: Final answer
    x = 10,103.16

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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.