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Finding the Fourth Proportional to 30,668.65, 45,994.08 and 11,944.51

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Solution

The fourth proportional to 30,668.65, 45,994.08 and 11,944.51 is: 17,913.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,668.65 : 45,994.08 = 11,944.51 : x
  2. Step 2: Convert to fraction form
    30,668.65/45,994.08 = 11,944.51/x
  3. Step 3: Cross multiply
    30,668.65x = 45,994.08 × 11,944.51
  4. Step 4: Simplify right side
    30,668.65x = 549,376,748.50
  5. Step 5: Solve for x
    x = 549,376,748.50/30,668.65
  6. Step 6: Final answer
    x = 17,913.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.