Home / 12,619.21-17,402.70-9,972.94

Finding the Fourth Proportional to 12,619.21, 17,402.70 and 9,972.94

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Solution

The fourth proportional to 12,619.21, 17,402.70 and 9,972.94 is: 13,753.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.21 : 17,402.70 = 9,972.94 : x
  2. Step 2: Convert to fraction form
    12,619.21/17,402.70 = 9,972.94/x
  3. Step 3: Cross multiply
    12,619.21x = 17,402.70 × 9,972.94
  4. Step 4: Simplify right side
    12,619.21x = 173,556,082.94
  5. Step 5: Solve for x
    x = 173,556,082.94/12,619.21
  6. Step 6: Final answer
    x = 13,753.32

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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.