Home / 18,385.45-25,377.27-12,012.98

Finding the Fourth Proportional to 18,385.45, 25,377.27 and 12,012.98

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Solution

The fourth proportional to 18,385.45, 25,377.27 and 12,012.98 is: 16,581.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.45 : 25,377.27 = 12,012.98 : x
  2. Step 2: Convert to fraction form
    18,385.45/25,377.27 = 12,012.98/x
  3. Step 3: Cross multiply
    18,385.45x = 25,377.27 × 12,012.98
  4. Step 4: Simplify right side
    18,385.45x = 304,856,465.03
  5. Step 5: Solve for x
    x = 304,856,465.03/18,385.45
  6. Step 6: Final answer
    x = 16,581.40

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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.