Home / 20,385.36-30,532.83-15,670.68

Finding the Fourth Proportional to 20,385.36, 30,532.83 and 15,670.68

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Solution

The fourth proportional to 20,385.36, 30,532.83 and 15,670.68 is: 23,471.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385.36 : 30,532.83 = 15,670.68 : x
  2. Step 2: Convert to fraction form
    20,385.36/30,532.83 = 15,670.68/x
  3. Step 3: Cross multiply
    20,385.36x = 30,532.83 × 15,670.68
  4. Step 4: Simplify right side
    20,385.36x = 478,470,208.42
  5. Step 5: Solve for x
    x = 478,470,208.42/20,385.36
  6. Step 6: Final answer
    x = 23,471.27

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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.