Home / 13,788.77-19,022.36-9,190.58

Finding the Fourth Proportional to 13,788.77, 19,022.36 and 9,190.58

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Solution

The fourth proportional to 13,788.77, 19,022.36 and 9,190.58 is: 12,678.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.77 : 19,022.36 = 9,190.58 : x
  2. Step 2: Convert to fraction form
    13,788.77/19,022.36 = 9,190.58/x
  3. Step 3: Cross multiply
    13,788.77x = 19,022.36 × 9,190.58
  4. Step 4: Simplify right side
    13,788.77x = 174,826,380.30
  5. Step 5: Solve for x
    x = 174,826,380.30/13,788.77
  6. Step 6: Final answer
    x = 12,678.90

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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.