Home / 13,782.45-20,580.06-13,408.77

Finding the Fourth Proportional to 13,782.45, 20,580.06 and 13,408.77

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Solution

The fourth proportional to 13,782.45, 20,580.06 and 13,408.77 is: 20,022.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.45 : 20,580.06 = 13,408.77 : x
  2. Step 2: Convert to fraction form
    13,782.45/20,580.06 = 13,408.77/x
  3. Step 3: Cross multiply
    13,782.45x = 20,580.06 × 13,408.77
  4. Step 4: Simplify right side
    13,782.45x = 275,953,291.13
  5. Step 5: Solve for x
    x = 275,953,291.13/13,782.45
  6. Step 6: Final answer
    x = 20,022.08

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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.