Home / 27,038.88-40,530.96-12,978.36

Finding the Fourth Proportional to 27,038.88, 40,530.96 and 12,978.36

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Solution

The fourth proportional to 27,038.88, 40,530.96 and 12,978.36 is: 19,454.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,038.88 : 40,530.96 = 12,978.36 : x
  2. Step 2: Convert to fraction form
    27,038.88/40,530.96 = 12,978.36/x
  3. Step 3: Cross multiply
    27,038.88x = 40,530.96 × 12,978.36
  4. Step 4: Simplify right side
    27,038.88x = 526,025,390.03
  5. Step 5: Solve for x
    x = 526,025,390.03/27,038.88
  6. Step 6: Final answer
    x = 19,454.41

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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.