Home / 30,515.80-45,755.88-12,976.60

Finding the Fourth Proportional to 30,515.80, 45,755.88 and 12,976.60

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Solution

The fourth proportional to 30,515.80, 45,755.88 and 12,976.60 is: 19,457.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.80 : 45,755.88 = 12,976.60 : x
  2. Step 2: Convert to fraction form
    30,515.80/45,755.88 = 12,976.60/x
  3. Step 3: Cross multiply
    30,515.80x = 45,755.88 × 12,976.60
  4. Step 4: Simplify right side
    30,515.80x = 593,755,752.41
  5. Step 5: Solve for x
    x = 593,755,752.41/30,515.80
  6. Step 6: Final answer
    x = 19,457.32

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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.