Home / 20,674.14-28,546.38-15,886.53

Finding the Fourth Proportional to 20,674.14, 28,546.38 and 15,886.53

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Solution

The fourth proportional to 20,674.14, 28,546.38 and 15,886.53 is: 21,935.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.14 : 28,546.38 = 15,886.53 : x
  2. Step 2: Convert to fraction form
    20,674.14/28,546.38 = 15,886.53/x
  3. Step 3: Cross multiply
    20,674.14x = 28,546.38 × 15,886.53
  4. Step 4: Simplify right side
    20,674.14x = 453,502,922.26
  5. Step 5: Solve for x
    x = 453,502,922.26/20,674.14
  6. Step 6: Final answer
    x = 21,935.76

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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.