Home / 13,979.79-19,293.39-7,692.57

Finding the Fourth Proportional to 13,979.79, 19,293.39 and 7,692.57

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Solution

The fourth proportional to 13,979.79, 19,293.39 and 7,692.57 is: 10,616.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.79 : 19,293.39 = 7,692.57 : x
  2. Step 2: Convert to fraction form
    13,979.79/19,293.39 = 7,692.57/x
  3. Step 3: Cross multiply
    13,979.79x = 19,293.39 × 7,692.57
  4. Step 4: Simplify right side
    13,979.79x = 148,415,753.11
  5. Step 5: Solve for x
    x = 148,415,753.11/13,979.79
  6. Step 6: Final answer
    x = 10,616.45

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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.