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Finding the Fourth Proportional to 30,287.76, 41,795.04 and 18,956.80

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Solution

The fourth proportional to 30,287.76, 41,795.04 and 18,956.80 is: 26,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,287.76 : 41,795.04 = 18,956.80 : x
  2. Step 2: Convert to fraction form
    30,287.76/41,795.04 = 18,956.80/x
  3. Step 3: Cross multiply
    30,287.76x = 41,795.04 × 18,956.80
  4. Step 4: Simplify right side
    30,287.76x = 792,300,214.27
  5. Step 5: Solve for x
    x = 792,300,214.27/30,287.76
  6. Step 6: Final answer
    x = 26,159.09

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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.