Home / 21,430.10-29,573.52-11,998.68

Finding the Fourth Proportional to 21,430.10, 29,573.52 and 11,998.68

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Solution

The fourth proportional to 21,430.10, 29,573.52 and 11,998.68 is: 16,558.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.10 : 29,573.52 = 11,998.68 : x
  2. Step 2: Convert to fraction form
    21,430.10/29,573.52 = 11,998.68/x
  3. Step 3: Cross multiply
    21,430.10x = 29,573.52 × 11,998.68
  4. Step 4: Simplify right side
    21,430.10x = 354,843,202.95
  5. Step 5: Solve for x
    x = 354,843,202.95/21,430.10
  6. Step 6: Final answer
    x = 16,558.17

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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.