Home / 39,336.89-54,285.53-21,431.89

Finding the Fourth Proportional to 39,336.89, 54,285.53 and 21,431.89

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Solution

The fourth proportional to 39,336.89, 54,285.53 and 21,431.89 is: 29,576.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,336.89 : 54,285.53 = 21,431.89 : x
  2. Step 2: Convert to fraction form
    39,336.89/54,285.53 = 21,431.89/x
  3. Step 3: Cross multiply
    39,336.89x = 54,285.53 × 21,431.89
  4. Step 4: Simplify right side
    39,336.89x = 1,163,441,128.96
  5. Step 5: Solve for x
    x = 1,163,441,128.96/39,336.89
  6. Step 6: Final answer
    x = 29,576.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.