Home / 21,134.12-29,137.46-18,181.67

Finding the Fourth Proportional to 21,134.12, 29,137.46 and 18,181.67

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Solution

The fourth proportional to 21,134.12, 29,137.46 and 18,181.67 is: 25,066.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.12 : 29,137.46 = 18,181.67 : x
  2. Step 2: Convert to fraction form
    21,134.12/29,137.46 = 18,181.67/x
  3. Step 3: Cross multiply
    21,134.12x = 29,137.46 × 18,181.67
  4. Step 4: Simplify right side
    21,134.12x = 529,767,445.76
  5. Step 5: Solve for x
    x = 529,767,445.76/21,134.12
  6. Step 6: Final answer
    x = 25,066.93

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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.