Home / 21,157.02-31,738.26-7,110.99

Finding the Fourth Proportional to 21,157.02, 31,738.26 and 7,110.99

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Solution

The fourth proportional to 21,157.02, 31,738.26 and 7,110.99 is: 10,667.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.02 : 31,738.26 = 7,110.99 : x
  2. Step 2: Convert to fraction form
    21,157.02/31,738.26 = 7,110.99/x
  3. Step 3: Cross multiply
    21,157.02x = 31,738.26 × 7,110.99
  4. Step 4: Simplify right side
    21,157.02x = 225,690,449.48
  5. Step 5: Solve for x
    x = 225,690,449.48/21,157.02
  6. Step 6: Final answer
    x = 10,667.40

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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.