Home / 13,125.86-19,686.10-3,763.37

Finding the Fourth Proportional to 13,125.86, 19,686.10 and 3,763.37

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Solution

The fourth proportional to 13,125.86, 19,686.10 and 3,763.37 is: 5,644.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.86 : 19,686.10 = 3,763.37 : x
  2. Step 2: Convert to fraction form
    13,125.86/19,686.10 = 3,763.37/x
  3. Step 3: Cross multiply
    13,125.86x = 19,686.10 × 3,763.37
  4. Step 4: Simplify right side
    13,125.86x = 74,086,078.16
  5. Step 5: Solve for x
    x = 74,086,078.16/13,125.86
  6. Step 6: Final answer
    x = 5,644.28

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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.