Home / 14,855.22-20,499.87-8,140.70

Finding the Fourth Proportional to 14,855.22, 20,499.87 and 8,140.70

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Solution

The fourth proportional to 14,855.22, 20,499.87 and 8,140.70 is: 11,233.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,855.22 : 20,499.87 = 8,140.70 : x
  2. Step 2: Convert to fraction form
    14,855.22/20,499.87 = 8,140.70/x
  3. Step 3: Cross multiply
    14,855.22x = 20,499.87 × 8,140.70
  4. Step 4: Simplify right side
    14,855.22x = 166,883,291.71
  5. Step 5: Solve for x
    x = 166,883,291.71/14,855.22
  6. Step 6: Final answer
    x = 11,233.98

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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.