Home / 13,763.79-20,460.09-13,359.70

Finding the Fourth Proportional to 13,763.79, 20,460.09 and 13,359.70

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Solution

The fourth proportional to 13,763.79, 20,460.09 and 13,359.70 is: 19,859.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.79 : 20,460.09 = 13,359.70 : x
  2. Step 2: Convert to fraction form
    13,763.79/20,460.09 = 13,359.70/x
  3. Step 3: Cross multiply
    13,763.79x = 20,460.09 × 13,359.70
  4. Step 4: Simplify right side
    13,763.79x = 273,340,740.05
  5. Step 5: Solve for x
    x = 273,340,740.05/13,763.79
  6. Step 6: Final answer
    x = 19,859.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.