Home / 20,123.64-30,162.86-9,455.22

Finding the Fourth Proportional to 20,123.64, 30,162.86 and 9,455.22

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Solution

The fourth proportional to 20,123.64, 30,162.86 and 9,455.22 is: 14,172.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.64 : 30,162.86 = 9,455.22 : x
  2. Step 2: Convert to fraction form
    20,123.64/30,162.86 = 9,455.22/x
  3. Step 3: Cross multiply
    20,123.64x = 30,162.86 × 9,455.22
  4. Step 4: Simplify right side
    20,123.64x = 285,196,477.13
  5. Step 5: Solve for x
    x = 285,196,477.13/20,123.64
  6. Step 6: Final answer
    x = 14,172.21

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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.