Home / 10,139.12-15,198.51-4,207.94

Finding the Fourth Proportional to 10,139.12, 15,198.51 and 4,207.94

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Solution

The fourth proportional to 10,139.12, 15,198.51 and 4,207.94 is: 6,307.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,139.12 : 15,198.51 = 4,207.94 : x
  2. Step 2: Convert to fraction form
    10,139.12/15,198.51 = 4,207.94/x
  3. Step 3: Cross multiply
    10,139.12x = 15,198.51 × 4,207.94
  4. Step 4: Simplify right side
    10,139.12x = 63,954,418.17
  5. Step 5: Solve for x
    x = 63,954,418.17/10,139.12
  6. Step 6: Final answer
    x = 6,307.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.