Home / 28,546.30-39,431.54-21,913.89

Finding the Fourth Proportional to 28,546.30, 39,431.54 and 21,913.89

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Solution

The fourth proportional to 28,546.30, 39,431.54 and 21,913.89 is: 30,270.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,546.30 : 39,431.54 = 21,913.89 : x
  2. Step 2: Convert to fraction form
    28,546.30/39,431.54 = 21,913.89/x
  3. Step 3: Cross multiply
    28,546.30x = 39,431.54 × 21,913.89
  4. Step 4: Simplify right side
    28,546.30x = 864,098,430.09
  5. Step 5: Solve for x
    x = 864,098,430.09/28,546.30
  6. Step 6: Final answer
    x = 30,270.07

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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.