Home / 20,687.12-28,554.08-12,194.17

Finding the Fourth Proportional to 20,687.12, 28,554.08 and 12,194.17

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Solution

The fourth proportional to 20,687.12, 28,554.08 and 12,194.17 is: 16,831.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.12 : 28,554.08 = 12,194.17 : x
  2. Step 2: Convert to fraction form
    20,687.12/28,554.08 = 12,194.17/x
  3. Step 3: Cross multiply
    20,687.12x = 28,554.08 × 12,194.17
  4. Step 4: Simplify right side
    20,687.12x = 348,193,305.71
  5. Step 5: Solve for x
    x = 348,193,305.71/20,687.12
  6. Step 6: Final answer
    x = 16,831.41

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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.