Home / 30,821.96-42,514.26-18,880.94

Finding the Fourth Proportional to 30,821.96, 42,514.26 and 18,880.94

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Solution

The fourth proportional to 30,821.96, 42,514.26 and 18,880.94 is: 26,043.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,821.96 : 42,514.26 = 18,880.94 : x
  2. Step 2: Convert to fraction form
    30,821.96/42,514.26 = 18,880.94/x
  3. Step 3: Cross multiply
    30,821.96x = 42,514.26 × 18,880.94
  4. Step 4: Simplify right side
    30,821.96x = 802,709,192.20
  5. Step 5: Solve for x
    x = 802,709,192.20/30,821.96
  6. Step 6: Final answer
    x = 26,043.42

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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.