Home / 12,228.48-18,357.84-12,172.32

Finding the Fourth Proportional to 12,228.48, 18,357.84 and 12,172.32

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Solution

The fourth proportional to 12,228.48, 18,357.84 and 12,172.32 is: 18,273.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.48 : 18,357.84 = 12,172.32 : x
  2. Step 2: Convert to fraction form
    12,228.48/18,357.84 = 12,172.32/x
  3. Step 3: Cross multiply
    12,228.48x = 18,357.84 × 12,172.32
  4. Step 4: Simplify right side
    12,228.48x = 223,457,502.99
  5. Step 5: Solve for x
    x = 223,457,502.99/12,228.48
  6. Step 6: Final answer
    x = 18,273.53

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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.