Home / 13,512.74-18,650.89-8,211.08

Finding the Fourth Proportional to 13,512.74, 18,650.89 and 8,211.08

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Solution

The fourth proportional to 13,512.74, 18,650.89 and 8,211.08 is: 11,333.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.74 : 18,650.89 = 8,211.08 : x
  2. Step 2: Convert to fraction form
    13,512.74/18,650.89 = 8,211.08/x
  3. Step 3: Cross multiply
    13,512.74x = 18,650.89 × 8,211.08
  4. Step 4: Simplify right side
    13,512.74x = 153,144,006.75
  5. Step 5: Solve for x
    x = 153,144,006.75/13,512.74
  6. Step 6: Final answer
    x = 11,333.31

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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.