Home / 13,657.85-20,493.80-11,820.77

Finding the Fourth Proportional to 13,657.85, 20,493.80 and 11,820.77

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Solution

The fourth proportional to 13,657.85, 20,493.80 and 11,820.77 is: 17,737.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.85 : 20,493.80 = 11,820.77 : x
  2. Step 2: Convert to fraction form
    13,657.85/20,493.80 = 11,820.77/x
  3. Step 3: Cross multiply
    13,657.85x = 20,493.80 × 11,820.77
  4. Step 4: Simplify right side
    13,657.85x = 242,252,496.23
  5. Step 5: Solve for x
    x = 242,252,496.23/13,657.85
  6. Step 6: Final answer
    x = 17,737.24

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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.