Home / 18,721.45-25,829.34-12,010.70

Finding the Fourth Proportional to 18,721.45, 25,829.34 and 12,010.70

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Solution

The fourth proportional to 18,721.45, 25,829.34 and 12,010.70 is: 16,570.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.45 : 25,829.34 = 12,010.70 : x
  2. Step 2: Convert to fraction form
    18,721.45/25,829.34 = 12,010.70/x
  3. Step 3: Cross multiply
    18,721.45x = 25,829.34 × 12,010.70
  4. Step 4: Simplify right side
    18,721.45x = 310,228,453.94
  5. Step 5: Solve for x
    x = 310,228,453.94/18,721.45
  6. Step 6: Final answer
    x = 16,570.75

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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.