Home / 13,180.40-19,769.80-5,389.12

Finding the Fourth Proportional to 13,180.40, 19,769.80 and 5,389.12

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Solution

The fourth proportional to 13,180.40, 19,769.80 and 5,389.12 is: 8,083.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.40 : 19,769.80 = 5,389.12 : x
  2. Step 2: Convert to fraction form
    13,180.40/19,769.80 = 5,389.12/x
  3. Step 3: Cross multiply
    13,180.40x = 19,769.80 × 5,389.12
  4. Step 4: Simplify right side
    13,180.40x = 106,541,824.58
  5. Step 5: Solve for x
    x = 106,541,824.58/13,180.40
  6. Step 6: Final answer
    x = 8,083.35

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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.