Home / 21,615.15-29,828.30-12,055.33

Finding the Fourth Proportional to 21,615.15, 29,828.30 and 12,055.33

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Solution

The fourth proportional to 21,615.15, 29,828.30 and 12,055.33 is: 16,636.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.15 : 29,828.30 = 12,055.33 : x
  2. Step 2: Convert to fraction form
    21,615.15/29,828.30 = 12,055.33/x
  3. Step 3: Cross multiply
    21,615.15x = 29,828.30 × 12,055.33
  4. Step 4: Simplify right side
    21,615.15x = 359,589,850.70
  5. Step 5: Solve for x
    x = 359,589,850.70/21,615.15
  6. Step 6: Final answer
    x = 16,636.01

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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.