Home / 14,090.21-19,442.85-8,121.83

Finding the Fourth Proportional to 14,090.21, 19,442.85 and 8,121.83

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Solution

The fourth proportional to 14,090.21, 19,442.85 and 8,121.83 is: 11,207.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,090.21 : 19,442.85 = 8,121.83 : x
  2. Step 2: Convert to fraction form
    14,090.21/19,442.85 = 8,121.83/x
  3. Step 3: Cross multiply
    14,090.21x = 19,442.85 × 8,121.83
  4. Step 4: Simplify right side
    14,090.21x = 157,911,522.42
  5. Step 5: Solve for x
    x = 157,911,522.42/14,090.21
  6. Step 6: Final answer
    x = 11,207.18

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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.