Home / 19,664.28-27,134.68-12,109.40

Finding the Fourth Proportional to 19,664.28, 27,134.68 and 12,109.40

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Solution

The fourth proportional to 19,664.28, 27,134.68 and 12,109.40 is: 16,709.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.28 : 27,134.68 = 12,109.40 : x
  2. Step 2: Convert to fraction form
    19,664.28/27,134.68 = 12,109.40/x
  3. Step 3: Cross multiply
    19,664.28x = 27,134.68 × 12,109.40
  4. Step 4: Simplify right side
    19,664.28x = 328,584,693.99
  5. Step 5: Solve for x
    x = 328,584,693.99/19,664.28
  6. Step 6: Final answer
    x = 16,709.72

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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.