Home / 20,671.02-28,525.77-11,239.38

Finding the Fourth Proportional to 20,671.02, 28,525.77 and 11,239.38

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Solution

The fourth proportional to 20,671.02, 28,525.77 and 11,239.38 is: 15,510.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.02 : 28,525.77 = 11,239.38 : x
  2. Step 2: Convert to fraction form
    20,671.02/28,525.77 = 11,239.38/x
  3. Step 3: Cross multiply
    20,671.02x = 28,525.77 × 11,239.38
  4. Step 4: Simplify right side
    20,671.02x = 320,611,968.82
  5. Step 5: Solve for x
    x = 320,611,968.82/20,671.02
  6. Step 6: Final answer
    x = 15,510.22

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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.