Home / 28,558.88-39,411.48-15,983.60

Finding the Fourth Proportional to 28,558.88, 39,411.48 and 15,983.60

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Solution

The fourth proportional to 28,558.88, 39,411.48 and 15,983.60 is: 22,057.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.88 : 39,411.48 = 15,983.60 : x
  2. Step 2: Convert to fraction form
    28,558.88/39,411.48 = 15,983.60/x
  3. Step 3: Cross multiply
    28,558.88x = 39,411.48 × 15,983.60
  4. Step 4: Simplify right side
    28,558.88x = 629,937,331.73
  5. Step 5: Solve for x
    x = 629,937,331.73/28,558.88
  6. Step 6: Final answer
    x = 22,057.49

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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.