Home / 28,457.38-39,268.37-15,709.73

Finding the Fourth Proportional to 28,457.38, 39,268.37 and 15,709.73

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Solution

The fourth proportional to 28,457.38, 39,268.37 and 15,709.73 is: 21,677.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,457.38 : 39,268.37 = 15,709.73 : x
  2. Step 2: Convert to fraction form
    28,457.38/39,268.37 = 15,709.73/x
  3. Step 3: Cross multiply
    28,457.38x = 39,268.37 × 15,709.73
  4. Step 4: Simplify right side
    28,457.38x = 616,895,490.24
  5. Step 5: Solve for x
    x = 616,895,490.24/28,457.38
  6. Step 6: Final answer
    x = 21,677.88

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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.