Home / 21,341.97-29,443.77-12,387.96

Finding the Fourth Proportional to 21,341.97, 29,443.77 and 12,387.96

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Solution

The fourth proportional to 21,341.97, 29,443.77 and 12,387.96 is: 17,090.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.97 : 29,443.77 = 12,387.96 : x
  2. Step 2: Convert to fraction form
    21,341.97/29,443.77 = 12,387.96/x
  3. Step 3: Cross multiply
    21,341.97x = 29,443.77 × 12,387.96
  4. Step 4: Simplify right side
    21,341.97x = 364,748,245.01
  5. Step 5: Solve for x
    x = 364,748,245.01/21,341.97
  6. Step 6: Final answer
    x = 17,090.65

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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.