Home / 20,108.90-30,163.35-16,852.70

Finding the Fourth Proportional to 20,108.90, 30,163.35 and 16,852.70

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Solution

The fourth proportional to 20,108.90, 30,163.35 and 16,852.70 is: 25,279.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.90 : 30,163.35 = 16,852.70 : x
  2. Step 2: Convert to fraction form
    20,108.90/30,163.35 = 16,852.70/x
  3. Step 3: Cross multiply
    20,108.90x = 30,163.35 × 16,852.70
  4. Step 4: Simplify right side
    20,108.90x = 508,333,888.55
  5. Step 5: Solve for x
    x = 508,333,888.55/20,108.90
  6. Step 6: Final answer
    x = 25,279.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.