Home / 28,663.88-39,558.51-15,917.85

Finding the Fourth Proportional to 28,663.88, 39,558.51 and 15,917.85

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Solution

The fourth proportional to 28,663.88, 39,558.51 and 15,917.85 is: 21,967.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.88 : 39,558.51 = 15,917.85 : x
  2. Step 2: Convert to fraction form
    28,663.88/39,558.51 = 15,917.85/x
  3. Step 3: Cross multiply
    28,663.88x = 39,558.51 × 15,917.85
  4. Step 4: Simplify right side
    28,663.88x = 629,686,428.40
  5. Step 5: Solve for x
    x = 629,686,428.40/28,663.88
  6. Step 6: Final answer
    x = 21,967.94

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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.