Home / 13,160.67-18,159.98-8,451.33

Finding the Fourth Proportional to 13,160.67, 18,159.98 and 8,451.33

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Solution

The fourth proportional to 13,160.67, 18,159.98 and 8,451.33 is: 11,661.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.67 : 18,159.98 = 8,451.33 : x
  2. Step 2: Convert to fraction form
    13,160.67/18,159.98 = 8,451.33/x
  3. Step 3: Cross multiply
    13,160.67x = 18,159.98 × 8,451.33
  4. Step 4: Simplify right side
    13,160.67x = 153,475,941.52
  5. Step 5: Solve for x
    x = 153,475,941.52/13,160.67
  6. Step 6: Final answer
    x = 11,661.71

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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.