Home / 21,084.12-29,082.96-12,580.56

Finding the Fourth Proportional to 21,084.12, 29,082.96 and 12,580.56

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Solution

The fourth proportional to 21,084.12, 29,082.96 and 12,580.56 is: 17,353.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.12 : 29,082.96 = 12,580.56 : x
  2. Step 2: Convert to fraction form
    21,084.12/29,082.96 = 12,580.56/x
  3. Step 3: Cross multiply
    21,084.12x = 29,082.96 × 12,580.56
  4. Step 4: Simplify right side
    21,084.12x = 365,879,923.26
  5. Step 5: Solve for x
    x = 365,879,923.26/21,084.12
  6. Step 6: Final answer
    x = 17,353.34

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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.