Home / 21,640.06-29,796.67-18,446.19

Finding the Fourth Proportional to 21,640.06, 29,796.67 and 18,446.19

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Solution

The fourth proportional to 21,640.06, 29,796.67 and 18,446.19 is: 25,398.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,640.06 : 29,796.67 = 18,446.19 : x
  2. Step 2: Convert to fraction form
    21,640.06/29,796.67 = 18,446.19/x
  3. Step 3: Cross multiply
    21,640.06x = 29,796.67 × 18,446.19
  4. Step 4: Simplify right side
    21,640.06x = 549,635,182.96
  5. Step 5: Solve for x
    x = 549,635,182.96/21,640.06
  6. Step 6: Final answer
    x = 25,398.97

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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.