Home / 28,664.70-39,555.53-15,917.11

Finding the Fourth Proportional to 28,664.70, 39,555.53 and 15,917.11

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Solution

The fourth proportional to 28,664.70, 39,555.53 and 15,917.11 is: 21,964.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.70 : 39,555.53 = 15,917.11 : x
  2. Step 2: Convert to fraction form
    28,664.70/39,555.53 = 15,917.11/x
  3. Step 3: Cross multiply
    28,664.70x = 39,555.53 × 15,917.11
  4. Step 4: Simplify right side
    28,664.70x = 629,609,642.53
  5. Step 5: Solve for x
    x = 629,609,642.53/28,664.70
  6. Step 6: Final answer
    x = 21,964.63

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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.