Home / 13,673.80-18,868.70-8,007.78

Finding the Fourth Proportional to 13,673.80, 18,868.70 and 8,007.78

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Solution

The fourth proportional to 13,673.80, 18,868.70 and 8,007.78 is: 11,050.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.80 : 18,868.70 = 8,007.78 : x
  2. Step 2: Convert to fraction form
    13,673.80/18,868.70 = 8,007.78/x
  3. Step 3: Cross multiply
    13,673.80x = 18,868.70 × 8,007.78
  4. Step 4: Simplify right side
    13,673.80x = 151,096,398.49
  5. Step 5: Solve for x
    x = 151,096,398.49/13,673.80
  6. Step 6: Final answer
    x = 11,050.07

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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.