Home / 13,768.76-18,996.83-7,800.30

Finding the Fourth Proportional to 13,768.76, 18,996.83 and 7,800.30

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Solution

The fourth proportional to 13,768.76, 18,996.83 and 7,800.30 is: 10,762.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.76 : 18,996.83 = 7,800.30 : x
  2. Step 2: Convert to fraction form
    13,768.76/18,996.83 = 7,800.30/x
  3. Step 3: Cross multiply
    13,768.76x = 18,996.83 × 7,800.30
  4. Step 4: Simplify right side
    13,768.76x = 148,180,963.30
  5. Step 5: Solve for x
    x = 148,180,963.30/13,768.76
  6. Step 6: Final answer
    x = 10,762.11

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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.