Home / 20,898.16-31,323.10-9,629.94

Finding the Fourth Proportional to 20,898.16, 31,323.10 and 9,629.94

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Solution

The fourth proportional to 20,898.16, 31,323.10 and 9,629.94 is: 14,433.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.16 : 31,323.10 = 9,629.94 : x
  2. Step 2: Convert to fraction form
    20,898.16/31,323.10 = 9,629.94/x
  3. Step 3: Cross multiply
    20,898.16x = 31,323.10 × 9,629.94
  4. Step 4: Simplify right side
    20,898.16x = 301,639,700.31
  5. Step 5: Solve for x
    x = 301,639,700.31/20,898.16
  6. Step 6: Final answer
    x = 14,433.79

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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.