Home / 13,922.18-19,213.84-7,635.78

Finding the Fourth Proportional to 13,922.18, 19,213.84 and 7,635.78

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Solution

The fourth proportional to 13,922.18, 19,213.84 and 7,635.78 is: 10,538.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,922.18 : 19,213.84 = 7,635.78 : x
  2. Step 2: Convert to fraction form
    13,922.18/19,213.84 = 7,635.78/x
  3. Step 3: Cross multiply
    13,922.18x = 19,213.84 × 7,635.78
  4. Step 4: Simplify right side
    13,922.18x = 146,712,655.20
  5. Step 5: Solve for x
    x = 146,712,655.20/13,922.18
  6. Step 6: Final answer
    x = 10,538.05

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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.