Home / 13,637.57-20,451.32-10,721.57

Finding the Fourth Proportional to 13,637.57, 20,451.32 and 10,721.57

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Solution

The fourth proportional to 13,637.57, 20,451.32 and 10,721.57 is: 16,078.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,637.57 : 20,451.32 = 10,721.57 : x
  2. Step 2: Convert to fraction form
    13,637.57/20,451.32 = 10,721.57/x
  3. Step 3: Cross multiply
    13,637.57x = 20,451.32 × 10,721.57
  4. Step 4: Simplify right side
    13,637.57x = 219,270,205.36
  5. Step 5: Solve for x
    x = 219,270,205.36/13,637.57
  6. Step 6: Final answer
    x = 16,078.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.