Home / 21,923.36-30,257.18-12,365.21

Finding the Fourth Proportional to 21,923.36, 30,257.18 and 12,365.21

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Solution

The fourth proportional to 21,923.36, 30,257.18 and 12,365.21 is: 17,065.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,923.36 : 30,257.18 = 12,365.21 : x
  2. Step 2: Convert to fraction form
    21,923.36/30,257.18 = 12,365.21/x
  3. Step 3: Cross multiply
    21,923.36x = 30,257.18 × 12,365.21
  4. Step 4: Simplify right side
    21,923.36x = 374,136,171.60
  5. Step 5: Solve for x
    x = 374,136,171.60/21,923.36
  6. Step 6: Final answer
    x = 17,065.64

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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.