Home / 10,077.31-15,115.95-2,681.77

Finding the Fourth Proportional to 10,077.31, 15,115.95 and 2,681.77

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Solution

The fourth proportional to 10,077.31, 15,115.95 and 2,681.77 is: 4,022.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,077.31 : 15,115.95 = 2,681.77 : x
  2. Step 2: Convert to fraction form
    10,077.31/15,115.95 = 2,681.77/x
  3. Step 3: Cross multiply
    10,077.31x = 15,115.95 × 2,681.77
  4. Step 4: Simplify right side
    10,077.31x = 40,537,487.82
  5. Step 5: Solve for x
    x = 40,537,487.82/10,077.31
  6. Step 6: Final answer
    x = 4,022.65

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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.