Home / 12,492.19-18,740.58-4,171.42

Finding the Fourth Proportional to 12,492.19, 18,740.58 and 4,171.42

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Solution

The fourth proportional to 12,492.19, 18,740.58 and 4,171.42 is: 6,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.19 : 18,740.58 = 4,171.42 : x
  2. Step 2: Convert to fraction form
    12,492.19/18,740.58 = 4,171.42/x
  3. Step 3: Cross multiply
    12,492.19x = 18,740.58 × 4,171.42
  4. Step 4: Simplify right side
    12,492.19x = 78,174,830.22
  5. Step 5: Solve for x
    x = 78,174,830.22/12,492.19
  6. Step 6: Final answer
    x = 6,257.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.