Home / 21,430.93-29,558.44-18,773.72

Finding the Fourth Proportional to 21,430.93, 29,558.44 and 18,773.72

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Solution

The fourth proportional to 21,430.93, 29,558.44 and 18,773.72 is: 25,893.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.93 : 29,558.44 = 18,773.72 : x
  2. Step 2: Convert to fraction form
    21,430.93/29,558.44 = 18,773.72/x
  3. Step 3: Cross multiply
    21,430.93x = 29,558.44 × 18,773.72
  4. Step 4: Simplify right side
    21,430.93x = 554,922,081.78
  5. Step 5: Solve for x
    x = 554,922,081.78/21,430.93
  6. Step 6: Final answer
    x = 25,893.51

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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.