Home / 28,455.23-39,268.22-15,708.42

Finding the Fourth Proportional to 28,455.23, 39,268.22 and 15,708.42

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Solution

The fourth proportional to 28,455.23, 39,268.22 and 15,708.42 is: 21,677.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.23 : 39,268.22 = 15,708.42 : x
  2. Step 2: Convert to fraction form
    28,455.23/39,268.22 = 15,708.42/x
  3. Step 3: Cross multiply
    28,455.23x = 39,268.22 × 15,708.42
  4. Step 4: Simplify right side
    28,455.23x = 616,841,731.68
  5. Step 5: Solve for x
    x = 616,841,731.68/28,455.23
  6. Step 6: Final answer
    x = 21,677.62

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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.