Home / 28,453.44-39,268.36-15,708.90

Finding the Fourth Proportional to 28,453.44, 39,268.36 and 15,708.90

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Solution

The fourth proportional to 28,453.44, 39,268.36 and 15,708.90 is: 21,679.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.44 : 39,268.36 = 15,708.90 : x
  2. Step 2: Convert to fraction form
    28,453.44/39,268.36 = 15,708.90/x
  3. Step 3: Cross multiply
    28,453.44x = 39,268.36 × 15,708.90
  4. Step 4: Simplify right side
    28,453.44x = 616,862,740.40
  5. Step 5: Solve for x
    x = 616,862,740.40/28,453.44
  6. Step 6: Final answer
    x = 21,679.72

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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.