Home / 28,651.26-39,538.12-15,903.70

Finding the Fourth Proportional to 28,651.26, 39,538.12 and 15,903.70

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Solution

The fourth proportional to 28,651.26, 39,538.12 and 15,903.70 is: 21,946.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,651.26 : 39,538.12 = 15,903.70 : x
  2. Step 2: Convert to fraction form
    28,651.26/39,538.12 = 15,903.70/x
  3. Step 3: Cross multiply
    28,651.26x = 39,538.12 × 15,903.70
  4. Step 4: Simplify right side
    28,651.26x = 628,802,399.04
  5. Step 5: Solve for x
    x = 628,802,399.04/28,651.26
  6. Step 6: Final answer
    x = 21,946.76

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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.