Home / 10,855.70-14,981.18-6,139.88

Finding the Fourth Proportional to 10,855.70, 14,981.18 and 6,139.88

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Solution

The fourth proportional to 10,855.70, 14,981.18 and 6,139.88 is: 8,473.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,855.70 : 14,981.18 = 6,139.88 : x
  2. Step 2: Convert to fraction form
    10,855.70/14,981.18 = 6,139.88/x
  3. Step 3: Cross multiply
    10,855.70x = 14,981.18 × 6,139.88
  4. Step 4: Simplify right side
    10,855.70x = 91,982,541.85
  5. Step 5: Solve for x
    x = 91,982,541.85/10,855.70
  6. Step 6: Final answer
    x = 8,473.21

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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.