Home / 13,813.28-19,062.18-7,845.20

Finding the Fourth Proportional to 13,813.28, 19,062.18 and 7,845.20

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Solution

The fourth proportional to 13,813.28, 19,062.18 and 7,845.20 is: 10,826.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.28 : 19,062.18 = 7,845.20 : x
  2. Step 2: Convert to fraction form
    13,813.28/19,062.18 = 7,845.20/x
  3. Step 3: Cross multiply
    13,813.28x = 19,062.18 × 7,845.20
  4. Step 4: Simplify right side
    13,813.28x = 149,546,614.54
  5. Step 5: Solve for x
    x = 149,546,614.54/13,813.28
  6. Step 6: Final answer
    x = 10,826.29

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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.