Home / 18,357.30-25,318.98-12,379.50

Finding the Fourth Proportional to 18,357.30, 25,318.98 and 12,379.50

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Solution

The fourth proportional to 18,357.30, 25,318.98 and 12,379.50 is: 17,074.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,357.30 : 25,318.98 = 12,379.50 : x
  2. Step 2: Convert to fraction form
    18,357.30/25,318.98 = 12,379.50/x
  3. Step 3: Cross multiply
    18,357.30x = 25,318.98 × 12,379.50
  4. Step 4: Simplify right side
    18,357.30x = 313,436,312.91
  5. Step 5: Solve for x
    x = 313,436,312.91/18,357.30
  6. Step 6: Final answer
    x = 17,074.21

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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.