Home / 21,181.55-31,741.70-11,695.74

Finding the Fourth Proportional to 21,181.55, 31,741.70 and 11,695.74

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Solution

The fourth proportional to 21,181.55, 31,741.70 and 11,695.74 is: 17,526.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.55 : 31,741.70 = 11,695.74 : x
  2. Step 2: Convert to fraction form
    21,181.55/31,741.70 = 11,695.74/x
  3. Step 3: Cross multiply
    21,181.55x = 31,741.70 × 11,695.74
  4. Step 4: Simplify right side
    21,181.55x = 371,242,670.36
  5. Step 5: Solve for x
    x = 371,242,670.36/21,181.55
  6. Step 6: Final answer
    x = 17,526.70

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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.