Home / 11,620.95-16,031.97-7,143.27

Finding the Fourth Proportional to 11,620.95, 16,031.97 and 7,143.27

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Solution

The fourth proportional to 11,620.95, 16,031.97 and 7,143.27 is: 9,854.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.95 : 16,031.97 = 7,143.27 : x
  2. Step 2: Convert to fraction form
    11,620.95/16,031.97 = 7,143.27/x
  3. Step 3: Cross multiply
    11,620.95x = 16,031.97 × 7,143.27
  4. Step 4: Simplify right side
    11,620.95x = 114,520,690.34
  5. Step 5: Solve for x
    x = 114,520,690.34/11,620.95
  6. Step 6: Final answer
    x = 9,854.68

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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.