Home / 20,775.03-28,671.27-16,987.57

Finding the Fourth Proportional to 20,775.03, 28,671.27 and 16,987.57

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Solution

The fourth proportional to 20,775.03, 28,671.27 and 16,987.57 is: 23,444.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.03 : 28,671.27 = 16,987.57 : x
  2. Step 2: Convert to fraction form
    20,775.03/28,671.27 = 16,987.57/x
  3. Step 3: Cross multiply
    20,775.03x = 28,671.27 × 16,987.57
  4. Step 4: Simplify right side
    20,775.03x = 487,055,232.01
  5. Step 5: Solve for x
    x = 487,055,232.01/20,775.03
  6. Step 6: Final answer
    x = 23,444.26

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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.