Home / 13,979.34-19,291.86-7,692.12

Finding the Fourth Proportional to 13,979.34, 19,291.86 and 7,692.12

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Solution

The fourth proportional to 13,979.34, 19,291.86 and 7,692.12 is: 10,615.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.34 : 19,291.86 = 7,692.12 : x
  2. Step 2: Convert to fraction form
    13,979.34/19,291.86 = 7,692.12/x
  3. Step 3: Cross multiply
    13,979.34x = 19,291.86 × 7,692.12
  4. Step 4: Simplify right side
    13,979.34x = 148,395,302.14
  5. Step 5: Solve for x
    x = 148,395,302.14/13,979.34
  6. Step 6: Final answer
    x = 10,615.33

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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.