Home / 21,670.96-29,896.40-12,713.92

Finding the Fourth Proportional to 21,670.96, 29,896.40 and 12,713.92

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Solution

The fourth proportional to 21,670.96, 29,896.40 and 12,713.92 is: 17,539.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,670.96 : 29,896.40 = 12,713.92 : x
  2. Step 2: Convert to fraction form
    21,670.96/29,896.40 = 12,713.92/x
  3. Step 3: Cross multiply
    21,670.96x = 29,896.40 × 12,713.92
  4. Step 4: Simplify right side
    21,670.96x = 380,100,437.89
  5. Step 5: Solve for x
    x = 380,100,437.89/21,670.96
  6. Step 6: Final answer
    x = 17,539.62

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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.