Home / 28,392.12-39,171.60-17,777.88

Finding the Fourth Proportional to 28,392.12, 39,171.60 and 17,777.88

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Solution

The fourth proportional to 28,392.12, 39,171.60 and 17,777.88 is: 24,527.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.12 : 39,171.60 = 17,777.88 : x
  2. Step 2: Convert to fraction form
    28,392.12/39,171.60 = 17,777.88/x
  3. Step 3: Cross multiply
    28,392.12x = 39,171.60 × 17,777.88
  4. Step 4: Simplify right side
    28,392.12x = 696,388,004.21
  5. Step 5: Solve for x
    x = 696,388,004.21/28,392.12
  6. Step 6: Final answer
    x = 24,527.51

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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.