Home / 28,471.29-39,286.99-17,140.60

Finding the Fourth Proportional to 28,471.29, 39,286.99 and 17,140.60

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Solution

The fourth proportional to 28,471.29, 39,286.99 and 17,140.60 is: 23,651.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,471.29 : 39,286.99 = 17,140.60 : x
  2. Step 2: Convert to fraction form
    28,471.29/39,286.99 = 17,140.60/x
  3. Step 3: Cross multiply
    28,471.29x = 39,286.99 × 17,140.60
  4. Step 4: Simplify right side
    28,471.29x = 673,402,580.79
  5. Step 5: Solve for x
    x = 673,402,580.79/28,471.29
  6. Step 6: Final answer
    x = 23,651.99

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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.