Home / 39,189.96-58,788.72-12,888.36

Finding the Fourth Proportional to 39,189.96, 58,788.72 and 12,888.36

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Solution

The fourth proportional to 39,189.96, 58,788.72 and 12,888.36 is: 19,333.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,189.96 : 58,788.72 = 12,888.36 : x
  2. Step 2: Convert to fraction form
    39,189.96/58,788.72 = 12,888.36/x
  3. Step 3: Cross multiply
    39,189.96x = 58,788.72 × 12,888.36
  4. Step 4: Simplify right side
    39,189.96x = 757,690,187.30
  5. Step 5: Solve for x
    x = 757,690,187.30/39,189.96
  6. Step 6: Final answer
    x = 19,333.78

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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.