Home / 10,155.78-15,235.29-3,134.13

Finding the Fourth Proportional to 10,155.78, 15,235.29 and 3,134.13

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Solution

The fourth proportional to 10,155.78, 15,235.29 and 3,134.13 is: 4,701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.78 : 15,235.29 = 3,134.13 : x
  2. Step 2: Convert to fraction form
    10,155.78/15,235.29 = 3,134.13/x
  3. Step 3: Cross multiply
    10,155.78x = 15,235.29 × 3,134.13
  4. Step 4: Simplify right side
    10,155.78x = 47,749,379.45
  5. Step 5: Solve for x
    x = 47,749,379.45/10,155.78
  6. Step 6: Final answer
    x = 4,701.69

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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.