Home / 14,128.17-21,192.11-3,454.64

Finding the Fourth Proportional to 14,128.17, 21,192.11 and 3,454.64

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Solution

The fourth proportional to 14,128.17, 21,192.11 and 3,454.64 is: 5,181.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.17 : 21,192.11 = 3,454.64 : x
  2. Step 2: Convert to fraction form
    14,128.17/21,192.11 = 3,454.64/x
  3. Step 3: Cross multiply
    14,128.17x = 21,192.11 × 3,454.64
  4. Step 4: Simplify right side
    14,128.17x = 73,210,987.66
  5. Step 5: Solve for x
    x = 73,210,987.66/14,128.17
  6. Step 6: Final answer
    x = 5,181.92

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1.5x scale

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.