Home / 21,430.37-29,571.33-12,476.43

Finding the Fourth Proportional to 21,430.37, 29,571.33 and 12,476.43

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Solution

The fourth proportional to 21,430.37, 29,571.33 and 12,476.43 is: 17,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.37 : 29,571.33 = 12,476.43 : x
  2. Step 2: Convert to fraction form
    21,430.37/29,571.33 = 12,476.43/x
  3. Step 3: Cross multiply
    21,430.37x = 29,571.33 × 12,476.43
  4. Step 4: Simplify right side
    21,430.37x = 368,944,628.75
  5. Step 5: Solve for x
    x = 368,944,628.75/21,430.37
  6. Step 6: Final answer
    x = 17,215.97

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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.