Home / 14,710.08-20,297.76-8,421.44

Finding the Fourth Proportional to 14,710.08, 20,297.76 and 8,421.44

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Solution

The fourth proportional to 14,710.08, 20,297.76 and 8,421.44 is: 11,620.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,710.08 : 20,297.76 = 8,421.44 : x
  2. Step 2: Convert to fraction form
    14,710.08/20,297.76 = 8,421.44/x
  3. Step 3: Cross multiply
    14,710.08x = 20,297.76 × 8,421.44
  4. Step 4: Simplify right side
    14,710.08x = 170,936,367.97
  5. Step 5: Solve for x
    x = 170,936,367.97/14,710.08
  6. Step 6: Final answer
    x = 11,620.36

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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.