Home / 20,830.56-28,658.88-18,184.08

Finding the Fourth Proportional to 20,830.56, 28,658.88 and 18,184.08

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Solution

The fourth proportional to 20,830.56, 28,658.88 and 18,184.08 is: 25,017.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.56 : 28,658.88 = 18,184.08 : x
  2. Step 2: Convert to fraction form
    20,830.56/28,658.88 = 18,184.08/x
  3. Step 3: Cross multiply
    20,830.56x = 28,658.88 × 18,184.08
  4. Step 4: Simplify right side
    20,830.56x = 521,135,366.63
  5. Step 5: Solve for x
    x = 521,135,366.63/20,830.56
  6. Step 6: Final answer
    x = 25,017.83

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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.