Home / 19,812.25-27,341.72-11,428.75

Finding the Fourth Proportional to 19,812.25, 27,341.72 and 11,428.75

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Solution

The fourth proportional to 19,812.25, 27,341.72 and 11,428.75 is: 15,772.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.25 : 27,341.72 = 11,428.75 : x
  2. Step 2: Convert to fraction form
    19,812.25/27,341.72 = 11,428.75/x
  3. Step 3: Cross multiply
    19,812.25x = 27,341.72 × 11,428.75
  4. Step 4: Simplify right side
    19,812.25x = 312,481,682.45
  5. Step 5: Solve for x
    x = 312,481,682.45/19,812.25
  6. Step 6: Final answer
    x = 15,772.15

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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.