Home / 28,253.44-38,991.57-15,678.19

Finding the Fourth Proportional to 28,253.44, 38,991.57 and 15,678.19

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Solution

The fourth proportional to 28,253.44, 38,991.57 and 15,678.19 is: 21,636.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,253.44 : 38,991.57 = 15,678.19 : x
  2. Step 2: Convert to fraction form
    28,253.44/38,991.57 = 15,678.19/x
  3. Step 3: Cross multiply
    28,253.44x = 38,991.57 × 15,678.19
  4. Step 4: Simplify right side
    28,253.44x = 611,317,086.59
  5. Step 5: Solve for x
    x = 611,317,086.59/28,253.44
  6. Step 6: Final answer
    x = 21,636.91

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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.