Home / 20,671.08-28,525.86-11,239.80

Finding the Fourth Proportional to 20,671.08, 28,525.86 and 11,239.80

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Solution

The fourth proportional to 20,671.08, 28,525.86 and 11,239.80 is: 15,510.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.08 : 28,525.86 = 11,239.80 : x
  2. Step 2: Convert to fraction form
    20,671.08/28,525.86 = 11,239.80/x
  3. Step 3: Cross multiply
    20,671.08x = 28,525.86 × 11,239.80
  4. Step 4: Simplify right side
    20,671.08x = 320,624,961.23
  5. Step 5: Solve for x
    x = 320,624,961.23/20,671.08
  6. Step 6: Final answer
    x = 15,510.80

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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.