Home / 28,435.99-39,241.38-15,689.27

Finding the Fourth Proportional to 28,435.99, 39,241.38 and 15,689.27

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Solution

The fourth proportional to 28,435.99, 39,241.38 and 15,689.27 is: 21,651.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,435.99 : 39,241.38 = 15,689.27 : x
  2. Step 2: Convert to fraction form
    28,435.99/39,241.38 = 15,689.27/x
  3. Step 3: Cross multiply
    28,435.99x = 39,241.38 × 15,689.27
  4. Step 4: Simplify right side
    28,435.99x = 615,668,605.99
  5. Step 5: Solve for x
    x = 615,668,605.99/28,435.99
  6. Step 6: Final answer
    x = 21,651.04

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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.