Home / 13,948.96-21,032.96-12,786.60

Finding the Fourth Proportional to 13,948.96, 21,032.96 and 12,786.60

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Solution

The fourth proportional to 13,948.96, 21,032.96 and 12,786.60 is: 19,280.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,948.96 : 21,032.96 = 12,786.60 : x
  2. Step 2: Convert to fraction form
    13,948.96/21,032.96 = 12,786.60/x
  3. Step 3: Cross multiply
    13,948.96x = 21,032.96 × 12,786.60
  4. Step 4: Simplify right side
    13,948.96x = 268,940,046.34
  5. Step 5: Solve for x
    x = 268,940,046.34/13,948.96
  6. Step 6: Final answer
    x = 19,280.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.