Home / 13,898.20-20,847.30-6,971.08

Finding the Fourth Proportional to 13,898.20, 20,847.30 and 6,971.08

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Solution

The fourth proportional to 13,898.20, 20,847.30 and 6,971.08 is: 10,456.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,898.20 : 20,847.30 = 6,971.08 : x
  2. Step 2: Convert to fraction form
    13,898.20/20,847.30 = 6,971.08/x
  3. Step 3: Cross multiply
    13,898.20x = 20,847.30 × 6,971.08
  4. Step 4: Simplify right side
    13,898.20x = 145,328,196.08
  5. Step 5: Solve for x
    x = 145,328,196.08/13,898.20
  6. Step 6: Final answer
    x = 10,456.62

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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.