Home / 30,219.63-41,669.45-20,661.06

Finding the Fourth Proportional to 30,219.63, 41,669.45 and 20,661.06

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Solution

The fourth proportional to 30,219.63, 41,669.45 and 20,661.06 is: 28,489.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,219.63 : 41,669.45 = 20,661.06 : x
  2. Step 2: Convert to fraction form
    30,219.63/41,669.45 = 20,661.06/x
  3. Step 3: Cross multiply
    30,219.63x = 41,669.45 × 20,661.06
  4. Step 4: Simplify right side
    30,219.63x = 860,935,006.62
  5. Step 5: Solve for x
    x = 860,935,006.62/30,219.63
  6. Step 6: Final answer
    x = 28,489.26

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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.