Home / 13,646.92-18,825.85-7,977.96

Finding the Fourth Proportional to 13,646.92, 18,825.85 and 7,977.96

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Solution

The fourth proportional to 13,646.92, 18,825.85 and 7,977.96 is: 11,005.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,646.92 : 18,825.85 = 7,977.96 : x
  2. Step 2: Convert to fraction form
    13,646.92/18,825.85 = 7,977.96/x
  3. Step 3: Cross multiply
    13,646.92x = 18,825.85 × 7,977.96
  4. Step 4: Simplify right side
    13,646.92x = 150,191,878.27
  5. Step 5: Solve for x
    x = 150,191,878.27/13,646.92
  6. Step 6: Final answer
    x = 11,005.55

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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.