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Finding the Fourth Proportional to 33,721, 46,531.65 and 18,612.69

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Solution

The fourth proportional to 33,721, 46,531.65 and 18,612.69 is: 25,683.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,721 : 46,531.65 = 18,612.69 : x
  2. Step 2: Convert to fraction form
    33,721/46,531.65 = 18,612.69/x
  3. Step 3: Cross multiply
    33,721x = 46,531.65 × 18,612.69
  4. Step 4: Simplify right side
    33,721x = 866,079,176.64
  5. Step 5: Solve for x
    x = 866,079,176.64/33,721
  6. Step 6: Final answer
    x = 25,683.67

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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.