Home / 21,184.43-29,235.43-12,687.94

Finding the Fourth Proportional to 21,184.43, 29,235.43 and 12,687.94

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Solution

The fourth proportional to 21,184.43, 29,235.43 and 12,687.94 is: 17,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.43 : 29,235.43 = 12,687.94 : x
  2. Step 2: Convert to fraction form
    21,184.43/29,235.43 = 12,687.94/x
  3. Step 3: Cross multiply
    21,184.43x = 29,235.43 × 12,687.94
  4. Step 4: Simplify right side
    21,184.43x = 370,937,235.54
  5. Step 5: Solve for x
    x = 370,937,235.54/21,184.43
  6. Step 6: Final answer
    x = 17,509.90

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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.