Home / 21,226.88-31,774.70-18,077.60

Finding the Fourth Proportional to 21,226.88, 31,774.70 and 18,077.60

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Solution

The fourth proportional to 21,226.88, 31,774.70 and 18,077.60 is: 27,060.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.88 : 31,774.70 = 18,077.60 : x
  2. Step 2: Convert to fraction form
    21,226.88/31,774.70 = 18,077.60/x
  3. Step 3: Cross multiply
    21,226.88x = 31,774.70 × 18,077.60
  4. Step 4: Simplify right side
    21,226.88x = 574,410,441.35
  5. Step 5: Solve for x
    x = 574,410,441.35/21,226.88
  6. Step 6: Final answer
    x = 27,060.52

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1.5x scale

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.