Home / 14,815.52-20,447.44-9,778.72

Finding the Fourth Proportional to 14,815.52, 20,447.44 and 9,778.72

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Solution

The fourth proportional to 14,815.52, 20,447.44 and 9,778.72 is: 13,495.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,815.52 : 20,447.44 = 9,778.72 : x
  2. Step 2: Convert to fraction form
    14,815.52/20,447.44 = 9,778.72/x
  3. Step 3: Cross multiply
    14,815.52x = 20,447.44 × 9,778.72
  4. Step 4: Simplify right side
    14,815.52x = 199,949,790.48
  5. Step 5: Solve for x
    x = 199,949,790.48/14,815.52
  6. Step 6: Final answer
    x = 13,495.97

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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.