Home / 21,835.45-30,102.41-18,464.74

Finding the Fourth Proportional to 21,835.45, 30,102.41 and 18,464.74

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Solution

The fourth proportional to 21,835.45, 30,102.41 and 18,464.74 is: 25,455.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,835.45 : 30,102.41 = 18,464.74 : x
  2. Step 2: Convert to fraction form
    21,835.45/30,102.41 = 18,464.74/x
  3. Step 3: Cross multiply
    21,835.45x = 30,102.41 × 18,464.74
  4. Step 4: Simplify right side
    21,835.45x = 555,833,174.02
  5. Step 5: Solve for x
    x = 555,833,174.02/21,835.45
  6. Step 6: Final answer
    x = 25,455.54

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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.