Home / 14,854.36-20,499.28-8,139.54

Finding the Fourth Proportional to 14,854.36, 20,499.28 and 8,139.54

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Solution

The fourth proportional to 14,854.36, 20,499.28 and 8,139.54 is: 11,232.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,854.36 : 20,499.28 = 8,139.54 : x
  2. Step 2: Convert to fraction form
    14,854.36/20,499.28 = 8,139.54/x
  3. Step 3: Cross multiply
    14,854.36x = 20,499.28 × 8,139.54
  4. Step 4: Simplify right side
    14,854.36x = 166,854,709.53
  5. Step 5: Solve for x
    x = 166,854,709.53/14,854.36
  6. Step 6: Final answer
    x = 11,232.71

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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.