Home / 27,027.76-40,531.20-12,978.84

Finding the Fourth Proportional to 27,027.76, 40,531.20 and 12,978.84

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Solution

The fourth proportional to 27,027.76, 40,531.20 and 12,978.84 is: 19,463.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,027.76 : 40,531.20 = 12,978.84 : x
  2. Step 2: Convert to fraction form
    27,027.76/40,531.20 = 12,978.84/x
  3. Step 3: Cross multiply
    27,027.76x = 40,531.20 × 12,978.84
  4. Step 4: Simplify right side
    27,027.76x = 526,047,959.81
  5. Step 5: Solve for x
    x = 526,047,959.81/27,027.76
  6. Step 6: Final answer
    x = 19,463.25

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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.