Home / 13,979.72-19,291.92-7,692.08

Finding the Fourth Proportional to 13,979.72, 19,291.92 and 7,692.08

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Solution

The fourth proportional to 13,979.72, 19,291.92 and 7,692.08 is: 10,615.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.72 : 19,291.92 = 7,692.08 : x
  2. Step 2: Convert to fraction form
    13,979.72/19,291.92 = 7,692.08/x
  3. Step 3: Cross multiply
    13,979.72x = 19,291.92 × 7,692.08
  4. Step 4: Simplify right side
    13,979.72x = 148,394,991.99
  5. Step 5: Solve for x
    x = 148,394,991.99/13,979.72
  6. Step 6: Final answer
    x = 10,615.02

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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.