Home / 13,796.93-19,039.55-8,130.78

Finding the Fourth Proportional to 13,796.93, 19,039.55 and 8,130.78

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Solution

The fourth proportional to 13,796.93, 19,039.55 and 8,130.78 is: 11,220.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,796.93 : 19,039.55 = 8,130.78 : x
  2. Step 2: Convert to fraction form
    13,796.93/19,039.55 = 8,130.78/x
  3. Step 3: Cross multiply
    13,796.93x = 19,039.55 × 8,130.78
  4. Step 4: Simplify right side
    13,796.93x = 154,806,392.35
  5. Step 5: Solve for x
    x = 154,806,392.35/13,796.93
  6. Step 6: Final answer
    x = 11,220.35

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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.