Home / 18,581.40-25,631.10-12,295.80

Finding the Fourth Proportional to 18,581.40, 25,631.10 and 12,295.80

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Solution

The fourth proportional to 18,581.40, 25,631.10 and 12,295.80 is: 16,960.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.40 : 25,631.10 = 12,295.80 : x
  2. Step 2: Convert to fraction form
    18,581.40/25,631.10 = 12,295.80/x
  3. Step 3: Cross multiply
    18,581.40x = 25,631.10 × 12,295.80
  4. Step 4: Simplify right side
    18,581.40x = 315,154,879.38
  5. Step 5: Solve for x
    x = 315,154,879.38/18,581.40
  6. Step 6: Final answer
    x = 16,960.77

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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.