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Finding the Fourth Proportional to 30,912.80, 46,358.40 and 16,116.80

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Solution

The fourth proportional to 30,912.80, 46,358.40 and 16,116.80 is: 24,169.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.80 : 46,358.40 = 16,116.80 : x
  2. Step 2: Convert to fraction form
    30,912.80/46,358.40 = 16,116.80/x
  3. Step 3: Cross multiply
    30,912.80x = 46,358.40 × 16,116.80
  4. Step 4: Simplify right side
    30,912.80x = 747,149,061.12
  5. Step 5: Solve for x
    x = 747,149,061.12/30,912.80
  6. Step 6: Final answer
    x = 24,169.57

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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.