Home / 12,938.79-19,394.35-6,692.52

Finding the Fourth Proportional to 12,938.79, 19,394.35 and 6,692.52

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Solution

The fourth proportional to 12,938.79, 19,394.35 and 6,692.52 is: 10,031.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.79 : 19,394.35 = 6,692.52 : x
  2. Step 2: Convert to fraction form
    12,938.79/19,394.35 = 6,692.52/x
  3. Step 3: Cross multiply
    12,938.79x = 19,394.35 × 6,692.52
  4. Step 4: Simplify right side
    12,938.79x = 129,797,004.20
  5. Step 5: Solve for x
    x = 129,797,004.20/12,938.79
  6. Step 6: Final answer
    x = 10,031.62

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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.