Home / 14,855.36-20,499.71-8,140.77

Finding the Fourth Proportional to 14,855.36, 20,499.71 and 8,140.77

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Solution

The fourth proportional to 14,855.36, 20,499.71 and 8,140.77 is: 11,233.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,855.36 : 20,499.71 = 8,140.77 : x
  2. Step 2: Convert to fraction form
    14,855.36/20,499.71 = 8,140.77/x
  3. Step 3: Cross multiply
    14,855.36x = 20,499.71 × 8,140.77
  4. Step 4: Simplify right side
    14,855.36x = 166,883,383.47
  5. Step 5: Solve for x
    x = 166,883,383.47/14,855.36
  6. Step 6: Final answer
    x = 11,233.89

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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.