Home / 20,490.03-28,284.17-16,015.23

Finding the Fourth Proportional to 20,490.03, 28,284.17 and 16,015.23

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Solution

The fourth proportional to 20,490.03, 28,284.17 and 16,015.23 is: 22,107.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.03 : 28,284.17 = 16,015.23 : x
  2. Step 2: Convert to fraction form
    20,490.03/28,284.17 = 16,015.23/x
  3. Step 3: Cross multiply
    20,490.03x = 28,284.17 × 16,015.23
  4. Step 4: Simplify right side
    20,490.03x = 452,977,407.83
  5. Step 5: Solve for x
    x = 452,977,407.83/20,490.03
  6. Step 6: Final answer
    x = 22,107.21

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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.