Home / 21,438.40-32,100-17,473.46

Finding the Fourth Proportional to 21,438.40, 32,100 and 17,473.46

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Solution

The fourth proportional to 21,438.40, 32,100 and 17,473.46 is: 26,163.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.40 : 32,100 = 17,473.46 : x
  2. Step 2: Convert to fraction form
    21,438.40/32,100 = 17,473.46/x
  3. Step 3: Cross multiply
    21,438.40x = 32,100 × 17,473.46
  4. Step 4: Simplify right side
    21,438.40x = 560,898,066
  5. Step 5: Solve for x
    x = 560,898,066/21,438.40
  6. Step 6: Final answer
    x = 26,163.24

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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.