Home / 20,898.20-31,323.15-9,629.99

Finding the Fourth Proportional to 20,898.20, 31,323.15 and 9,629.99

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Solution

The fourth proportional to 20,898.20, 31,323.15 and 9,629.99 is: 14,433.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.20 : 31,323.15 = 9,629.99 : x
  2. Step 2: Convert to fraction form
    20,898.20/31,323.15 = 9,629.99/x
  3. Step 3: Cross multiply
    20,898.20x = 31,323.15 × 9,629.99
  4. Step 4: Simplify right side
    20,898.20x = 301,641,500.77
  5. Step 5: Solve for x
    x = 301,641,500.77/20,898.20
  6. Step 6: Final answer
    x = 14,433.85

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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.