Home / 20,539.42-28,344.43-11,107.99

Finding the Fourth Proportional to 20,539.42, 28,344.43 and 11,107.99

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Solution

The fourth proportional to 20,539.42, 28,344.43 and 11,107.99 is: 15,329.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.42 : 28,344.43 = 11,107.99 : x
  2. Step 2: Convert to fraction form
    20,539.42/28,344.43 = 11,107.99/x
  3. Step 3: Cross multiply
    20,539.42x = 28,344.43 × 11,107.99
  4. Step 4: Simplify right side
    20,539.42x = 314,849,534.87
  5. Step 5: Solve for x
    x = 314,849,534.87/20,539.42
  6. Step 6: Final answer
    x = 15,329.03

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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.