Home / 21,340.84-29,447.46-12,386.92

Finding the Fourth Proportional to 21,340.84, 29,447.46 and 12,386.92

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Solution

The fourth proportional to 21,340.84, 29,447.46 and 12,386.92 is: 17,092.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.84 : 29,447.46 = 12,386.92 : x
  2. Step 2: Convert to fraction form
    21,340.84/29,447.46 = 12,386.92/x
  3. Step 3: Cross multiply
    21,340.84x = 29,447.46 × 12,386.92
  4. Step 4: Simplify right side
    21,340.84x = 364,763,331.22
  5. Step 5: Solve for x
    x = 364,763,331.22/21,340.84
  6. Step 6: Final answer
    x = 17,092.27

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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.