Home / 21,422.54-29,557.50-12,345.68

Finding the Fourth Proportional to 21,422.54, 29,557.50 and 12,345.68

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Solution

The fourth proportional to 21,422.54, 29,557.50 and 12,345.68 is: 17,033.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.54 : 29,557.50 = 12,345.68 : x
  2. Step 2: Convert to fraction form
    21,422.54/29,557.50 = 12,345.68/x
  3. Step 3: Cross multiply
    21,422.54x = 29,557.50 × 12,345.68
  4. Step 4: Simplify right side
    21,422.54x = 364,907,436.60
  5. Step 5: Solve for x
    x = 364,907,436.60/21,422.54
  6. Step 6: Final answer
    x = 17,033.81

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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.