Home / 21,968.79-30,316.74-11,896.98

Finding the Fourth Proportional to 21,968.79, 30,316.74 and 11,896.98

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Solution

The fourth proportional to 21,968.79, 30,316.74 and 11,896.98 is: 16,417.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.79 : 30,316.74 = 11,896.98 : x
  2. Step 2: Convert to fraction form
    21,968.79/30,316.74 = 11,896.98/x
  3. Step 3: Cross multiply
    21,968.79x = 30,316.74 × 11,896.98
  4. Step 4: Simplify right side
    21,968.79x = 360,677,649.45
  5. Step 5: Solve for x
    x = 360,677,649.45/21,968.79
  6. Step 6: Final answer
    x = 16,417.73

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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.