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Finding the Fourth Proportional to 12,448.01, 18,628.95 and 11,931.34

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Solution

The fourth proportional to 12,448.01, 18,628.95 and 11,931.34 is: 17,855.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,448.01 : 18,628.95 = 11,931.34 : x
  2. Step 2: Convert to fraction form
    12,448.01/18,628.95 = 11,931.34/x
  3. Step 3: Cross multiply
    12,448.01x = 18,628.95 × 11,931.34
  4. Step 4: Simplify right side
    12,448.01x = 222,268,336.29
  5. Step 5: Solve for x
    x = 222,268,336.29/12,448.01
  6. Step 6: Final answer
    x = 17,855.73

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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.