Home / 21,430.60-29,573.38-11,998.96

Finding the Fourth Proportional to 21,430.60, 29,573.38 and 11,998.96

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Solution

The fourth proportional to 21,430.60, 29,573.38 and 11,998.96 is: 16,558.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.60 : 29,573.38 = 11,998.96 : x
  2. Step 2: Convert to fraction form
    21,430.60/29,573.38 = 11,998.96/x
  3. Step 3: Cross multiply
    21,430.60x = 29,573.38 × 11,998.96
  4. Step 4: Simplify right side
    21,430.60x = 354,849,773.69
  5. Step 5: Solve for x
    x = 354,849,773.69/21,430.60
  6. Step 6: Final answer
    x = 16,558.09

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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.