Home / 20,168.76-30,117.18-16,478.28

Finding the Fourth Proportional to 20,168.76, 30,117.18 and 16,478.28

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Solution

The fourth proportional to 20,168.76, 30,117.18 and 16,478.28 is: 24,606.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.76 : 30,117.18 = 16,478.28 : x
  2. Step 2: Convert to fraction form
    20,168.76/30,117.18 = 16,478.28/x
  3. Step 3: Cross multiply
    20,168.76x = 30,117.18 × 16,478.28
  4. Step 4: Simplify right side
    20,168.76x = 496,279,324.85
  5. Step 5: Solve for x
    x = 496,279,324.85/20,168.76
  6. Step 6: Final answer
    x = 24,606.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.