Home / 19,916.28-27,484.81-11,419.79

Finding the Fourth Proportional to 19,916.28, 27,484.81 and 11,419.79

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Solution

The fourth proportional to 19,916.28, 27,484.81 and 11,419.79 is: 15,759.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,916.28 : 27,484.81 = 11,419.79 : x
  2. Step 2: Convert to fraction form
    19,916.28/27,484.81 = 11,419.79/x
  3. Step 3: Cross multiply
    19,916.28x = 27,484.81 × 11,419.79
  4. Step 4: Simplify right side
    19,916.28x = 313,870,592.42
  5. Step 5: Solve for x
    x = 313,870,592.42/19,916.28
  6. Step 6: Final answer
    x = 15,759.50

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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.