Home / 21,826.05-30,118.80-12,394

Finding the Fourth Proportional to 21,826.05, 30,118.80 and 12,394

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Solution

The fourth proportional to 21,826.05, 30,118.80 and 12,394 is: 17,103.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,826.05 : 30,118.80 = 12,394 : x
  2. Step 2: Convert to fraction form
    21,826.05/30,118.80 = 12,394/x
  3. Step 3: Cross multiply
    21,826.05x = 30,118.80 × 12,394
  4. Step 4: Simplify right side
    21,826.05x = 373,292,407.20
  5. Step 5: Solve for x
    x = 373,292,407.20/21,826.05
  6. Step 6: Final answer
    x = 17,103.07

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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.