Home / 12,520.49-18,768.38-6,976.45

Finding the Fourth Proportional to 12,520.49, 18,768.38 and 6,976.45

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Solution

The fourth proportional to 12,520.49, 18,768.38 and 6,976.45 is: 10,457.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.49 : 18,768.38 = 6,976.45 : x
  2. Step 2: Convert to fraction form
    12,520.49/18,768.38 = 6,976.45/x
  3. Step 3: Cross multiply
    12,520.49x = 18,768.38 × 6,976.45
  4. Step 4: Simplify right side
    12,520.49x = 130,936,635.17
  5. Step 5: Solve for x
    x = 130,936,635.17/12,520.49
  6. Step 6: Final answer
    x = 10,457.79

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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.