Home / 22,102.75-30,495.31-13,145.77

Finding the Fourth Proportional to 22,102.75, 30,495.31 and 13,145.77

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Solution

The fourth proportional to 22,102.75, 30,495.31 and 13,145.77 is: 18,137.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,102.75 : 30,495.31 = 13,145.77 : x
  2. Step 2: Convert to fraction form
    22,102.75/30,495.31 = 13,145.77/x
  3. Step 3: Cross multiply
    22,102.75x = 30,495.31 × 13,145.77
  4. Step 4: Simplify right side
    22,102.75x = 400,884,331.34
  5. Step 5: Solve for x
    x = 400,884,331.34/22,102.75
  6. Step 6: Final answer
    x = 18,137.31

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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.