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Finding the Fourth Proportional to 30,299.70, 41,813.70 and 16,870.92

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Solution

The fourth proportional to 30,299.70, 41,813.70 and 16,870.92 is: 23,281.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,299.70 : 41,813.70 = 16,870.92 : x
  2. Step 2: Convert to fraction form
    30,299.70/41,813.70 = 16,870.92/x
  3. Step 3: Cross multiply
    30,299.70x = 41,813.70 × 16,870.92
  4. Step 4: Simplify right side
    30,299.70x = 705,435,587.60
  5. Step 5: Solve for x
    x = 705,435,587.60/30,299.70
  6. Step 6: Final answer
    x = 23,281.93

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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.