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Finding the Fourth Proportional to 30,157.99, 41,590.80 and 18,828.54

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Solution

The fourth proportional to 30,157.99, 41,590.80 and 18,828.54 is: 25,966.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,157.99 : 41,590.80 = 18,828.54 : x
  2. Step 2: Convert to fraction form
    30,157.99/41,590.80 = 18,828.54/x
  3. Step 3: Cross multiply
    30,157.99x = 41,590.80 × 18,828.54
  4. Step 4: Simplify right side
    30,157.99x = 783,094,041.43
  5. Step 5: Solve for x
    x = 783,094,041.43/30,157.99
  6. Step 6: Final answer
    x = 25,966.39

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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.