Home / 21,316.63-29,418.93-12,243.25

Finding the Fourth Proportional to 21,316.63, 29,418.93 and 12,243.25

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Solution

The fourth proportional to 21,316.63, 29,418.93 and 12,243.25 is: 16,896.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.63 : 29,418.93 = 12,243.25 : x
  2. Step 2: Convert to fraction form
    21,316.63/29,418.93 = 12,243.25/x
  3. Step 3: Cross multiply
    21,316.63x = 29,418.93 × 12,243.25
  4. Step 4: Simplify right side
    21,316.63x = 360,183,314.72
  5. Step 5: Solve for x
    x = 360,183,314.72/21,316.63
  6. Step 6: Final answer
    x = 16,896.82

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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.