Home / 13,877.28-19,155.57-8,214.03

Finding the Fourth Proportional to 13,877.28, 19,155.57 and 8,214.03

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Solution

The fourth proportional to 13,877.28, 19,155.57 and 8,214.03 is: 11,338.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,877.28 : 19,155.57 = 8,214.03 : x
  2. Step 2: Convert to fraction form
    13,877.28/19,155.57 = 8,214.03/x
  3. Step 3: Cross multiply
    13,877.28x = 19,155.57 × 8,214.03
  4. Step 4: Simplify right side
    13,877.28x = 157,344,426.65
  5. Step 5: Solve for x
    x = 157,344,426.65/13,877.28
  6. Step 6: Final answer
    x = 11,338.28

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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.