Home / 14,855.09-20,499.70-8,140.57

Finding the Fourth Proportional to 14,855.09, 20,499.70 and 8,140.57

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Solution

The fourth proportional to 14,855.09, 20,499.70 and 8,140.57 is: 11,233.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,855.09 : 20,499.70 = 8,140.57 : x
  2. Step 2: Convert to fraction form
    14,855.09/20,499.70 = 8,140.57/x
  3. Step 3: Cross multiply
    14,855.09x = 20,499.70 × 8,140.57
  4. Step 4: Simplify right side
    14,855.09x = 166,879,242.83
  5. Step 5: Solve for x
    x = 166,879,242.83/14,855.09
  6. Step 6: Final answer
    x = 11,233.81

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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.