Home / 13,926.10-19,218.39-7,875.85

Finding the Fourth Proportional to 13,926.10, 19,218.39 and 7,875.85

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Solution

The fourth proportional to 13,926.10, 19,218.39 and 7,875.85 is: 10,868.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.10 : 19,218.39 = 7,875.85 : x
  2. Step 2: Convert to fraction form
    13,926.10/19,218.39 = 7,875.85/x
  3. Step 3: Cross multiply
    13,926.10x = 19,218.39 × 7,875.85
  4. Step 4: Simplify right side
    13,926.10x = 151,361,156.88
  5. Step 5: Solve for x
    x = 151,361,156.88/13,926.10
  6. Step 6: Final answer
    x = 10,868.88

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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.