Home / 21,723.14-29,977.08-12,291.50

Finding the Fourth Proportional to 21,723.14, 29,977.08 and 12,291.50

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Solution

The fourth proportional to 21,723.14, 29,977.08 and 12,291.50 is: 16,961.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,723.14 : 29,977.08 = 12,291.50 : x
  2. Step 2: Convert to fraction form
    21,723.14/29,977.08 = 12,291.50/x
  3. Step 3: Cross multiply
    21,723.14x = 29,977.08 × 12,291.50
  4. Step 4: Simplify right side
    21,723.14x = 368,463,278.82
  5. Step 5: Solve for x
    x = 368,463,278.82/21,723.14
  6. Step 6: Final answer
    x = 16,961.79

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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.