Home / 20,671.07-28,525.86-11,239.63

Finding the Fourth Proportional to 20,671.07, 28,525.86 and 11,239.63

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Solution

The fourth proportional to 20,671.07, 28,525.86 and 11,239.63 is: 15,510.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.07 : 28,525.86 = 11,239.63 : x
  2. Step 2: Convert to fraction form
    20,671.07/28,525.86 = 11,239.63/x
  3. Step 3: Cross multiply
    20,671.07x = 28,525.86 × 11,239.63
  4. Step 4: Simplify right side
    20,671.07x = 320,620,040.52
  5. Step 5: Solve for x
    x = 320,620,040.52/20,671.07
  6. Step 6: Final answer
    x = 15,510.57

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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.