Home / 21,615.89-29,832.48-12,057.28

Finding the Fourth Proportional to 21,615.89, 29,832.48 and 12,057.28

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Solution

The fourth proportional to 21,615.89, 29,832.48 and 12,057.28 is: 16,640.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.89 : 29,832.48 = 12,057.28 : x
  2. Step 2: Convert to fraction form
    21,615.89/29,832.48 = 12,057.28/x
  3. Step 3: Cross multiply
    21,615.89x = 29,832.48 × 12,057.28
  4. Step 4: Simplify right side
    21,615.89x = 359,698,489.87
  5. Step 5: Solve for x
    x = 359,698,489.87/21,615.89
  6. Step 6: Final answer
    x = 16,640.47

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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.