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Finding the Fourth Proportional to 30,638.71, 45,934.73 and 15,838.19

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Solution

The fourth proportional to 30,638.71, 45,934.73 and 15,838.19 is: 23,745.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638.71 : 45,934.73 = 15,838.19 : x
  2. Step 2: Convert to fraction form
    30,638.71/45,934.73 = 15,838.19/x
  3. Step 3: Cross multiply
    30,638.71x = 45,934.73 × 15,838.19
  4. Step 4: Simplify right side
    30,638.71x = 727,522,672.47
  5. Step 5: Solve for x
    x = 727,522,672.47/30,638.71
  6. Step 6: Final answer
    x = 23,745.21

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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.