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Finding the Fourth Proportional to 30,373.39, 41,915.91 and 16,945.21

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Solution

The fourth proportional to 30,373.39, 41,915.91 and 16,945.21 is: 23,384.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,373.39 : 41,915.91 = 16,945.21 : x
  2. Step 2: Convert to fraction form
    30,373.39/41,915.91 = 16,945.21/x
  3. Step 3: Cross multiply
    30,373.39x = 41,915.91 × 16,945.21
  4. Step 4: Simplify right side
    30,373.39x = 710,273,897.29
  5. Step 5: Solve for x
    x = 710,273,897.29/30,373.39
  6. Step 6: Final answer
    x = 23,384.74

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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.