Home / 13,926.92-19,218.88-7,877.05

Finding the Fourth Proportional to 13,926.92, 19,218.88 and 7,877.05

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Solution

The fourth proportional to 13,926.92, 19,218.88 and 7,877.05 is: 10,870.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.92 : 19,218.88 = 7,877.05 : x
  2. Step 2: Convert to fraction form
    13,926.92/19,218.88 = 7,877.05/x
  3. Step 3: Cross multiply
    13,926.92x = 19,218.88 × 7,877.05
  4. Step 4: Simplify right side
    13,926.92x = 151,388,078.70
  5. Step 5: Solve for x
    x = 151,388,078.70/13,926.92
  6. Step 6: Final answer
    x = 10,870.18

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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.