Home / 21,458.54-29,623.94-16,667.75

Finding the Fourth Proportional to 21,458.54, 29,623.94 and 16,667.75

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Solution

The fourth proportional to 21,458.54, 29,623.94 and 16,667.75 is: 23,010.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,458.54 : 29,623.94 = 16,667.75 : x
  2. Step 2: Convert to fraction form
    21,458.54/29,623.94 = 16,667.75/x
  3. Step 3: Cross multiply
    21,458.54x = 29,623.94 × 16,667.75
  4. Step 4: Simplify right side
    21,458.54x = 493,764,541.66
  5. Step 5: Solve for x
    x = 493,764,541.66/21,458.54
  6. Step 6: Final answer
    x = 23,010.16

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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.