Home / 21,727.13-29,986.29-12,295.71

Finding the Fourth Proportional to 21,727.13, 29,986.29 and 12,295.71

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Solution

The fourth proportional to 21,727.13, 29,986.29 and 12,295.71 is: 16,969.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,727.13 : 29,986.29 = 12,295.71 : x
  2. Step 2: Convert to fraction form
    21,727.13/29,986.29 = 12,295.71/x
  3. Step 3: Cross multiply
    21,727.13x = 29,986.29 × 12,295.71
  4. Step 4: Simplify right side
    21,727.13x = 368,702,725.82
  5. Step 5: Solve for x
    x = 368,702,725.82/21,727.13
  6. Step 6: Final answer
    x = 16,969.70

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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.