Home / 21,291.86-29,383.08-12,340.04

Finding the Fourth Proportional to 21,291.86, 29,383.08 and 12,340.04

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Solution

The fourth proportional to 21,291.86, 29,383.08 and 12,340.04 is: 17,029.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.86 : 29,383.08 = 12,340.04 : x
  2. Step 2: Convert to fraction form
    21,291.86/29,383.08 = 12,340.04/x
  3. Step 3: Cross multiply
    21,291.86x = 29,383.08 × 12,340.04
  4. Step 4: Simplify right side
    21,291.86x = 362,588,382.52
  5. Step 5: Solve for x
    x = 362,588,382.52/21,291.86
  6. Step 6: Final answer
    x = 17,029.44

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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.