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Finding the Fourth Proportional to 30,391.69, 45,601.17 and 19,295.41

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Solution

The fourth proportional to 30,391.69, 45,601.17 and 19,295.41 is: 28,951.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,391.69 : 45,601.17 = 19,295.41 : x
  2. Step 2: Convert to fraction form
    30,391.69/45,601.17 = 19,295.41/x
  3. Step 3: Cross multiply
    30,391.69x = 45,601.17 × 19,295.41
  4. Step 4: Simplify right side
    30,391.69x = 879,893,271.63
  5. Step 5: Solve for x
    x = 879,893,271.63/30,391.69
  6. Step 6: Final answer
    x = 28,951.77

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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.