Home / 19,869.20-27,417.78-11,369.60

Finding the Fourth Proportional to 19,869.20, 27,417.78 and 11,369.60

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Solution

The fourth proportional to 19,869.20, 27,417.78 and 11,369.60 is: 15,689.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.20 : 27,417.78 = 11,369.60 : x
  2. Step 2: Convert to fraction form
    19,869.20/27,417.78 = 11,369.60/x
  3. Step 3: Cross multiply
    19,869.20x = 27,417.78 × 11,369.60
  4. Step 4: Simplify right side
    19,869.20x = 311,729,191.49
  5. Step 5: Solve for x
    x = 311,729,191.49/19,869.20
  6. Step 6: Final answer
    x = 15,689.07

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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.