Home / 13,155.77-18,151.71-8,446.43

Finding the Fourth Proportional to 13,155.77, 18,151.71 and 8,446.43

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Solution

The fourth proportional to 13,155.77, 18,151.71 and 8,446.43 is: 11,653.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.77 : 18,151.71 = 8,446.43 : x
  2. Step 2: Convert to fraction form
    13,155.77/18,151.71 = 8,446.43/x
  3. Step 3: Cross multiply
    13,155.77x = 18,151.71 × 8,446.43
  4. Step 4: Simplify right side
    13,155.77x = 153,317,147.90
  5. Step 5: Solve for x
    x = 153,317,147.90/13,155.77
  6. Step 6: Final answer
    x = 11,653.99

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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.