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Finding the Fourth Proportional to 30,034.65, 45,020.64 and 11,301.78

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Solution

The fourth proportional to 30,034.65, 45,020.64 and 11,301.78 is: 16,940.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,034.65 : 45,020.64 = 11,301.78 : x
  2. Step 2: Convert to fraction form
    30,034.65/45,020.64 = 11,301.78/x
  3. Step 3: Cross multiply
    30,034.65x = 45,020.64 × 11,301.78
  4. Step 4: Simplify right side
    30,034.65x = 508,813,368.74
  5. Step 5: Solve for x
    x = 508,813,368.74/30,034.65
  6. Step 6: Final answer
    x = 16,940.88

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1.5x scale

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.