Home / 21,285.57-29,374.07-12,338.25

Finding the Fourth Proportional to 21,285.57, 29,374.07 and 12,338.25

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Solution

The fourth proportional to 21,285.57, 29,374.07 and 12,338.25 is: 17,026.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.57 : 29,374.07 = 12,338.25 : x
  2. Step 2: Convert to fraction form
    21,285.57/29,374.07 = 12,338.25/x
  3. Step 3: Cross multiply
    21,285.57x = 29,374.07 × 12,338.25
  4. Step 4: Simplify right side
    21,285.57x = 362,424,677.19
  5. Step 5: Solve for x
    x = 362,424,677.19/21,285.57
  6. Step 6: Final answer
    x = 17,026.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.