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Finding the Fourth Proportional to 12,574.89, 18,862.32 and 3,340.89

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Solution

The fourth proportional to 12,574.89, 18,862.32 and 3,340.89 is: 5,011.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,574.89 : 18,862.32 = 3,340.89 : x
  2. Step 2: Convert to fraction form
    12,574.89/18,862.32 = 3,340.89/x
  3. Step 3: Cross multiply
    12,574.89x = 18,862.32 × 3,340.89
  4. Step 4: Simplify right side
    12,574.89x = 63,016,936.26
  5. Step 5: Solve for x
    x = 63,016,936.26/12,574.89
  6. Step 6: Final answer
    x = 5,011.33

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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.