Home / 12,750.64-19,126.08-3,985.60

Finding the Fourth Proportional to 12,750.64, 19,126.08 and 3,985.60

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Solution

The fourth proportional to 12,750.64, 19,126.08 and 3,985.60 is: 5,978.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.64 : 19,126.08 = 3,985.60 : x
  2. Step 2: Convert to fraction form
    12,750.64/19,126.08 = 3,985.60/x
  3. Step 3: Cross multiply
    12,750.64x = 19,126.08 × 3,985.60
  4. Step 4: Simplify right side
    12,750.64x = 76,228,904.45
  5. Step 5: Solve for x
    x = 76,228,904.45/12,750.64
  6. Step 6: Final answer
    x = 5,978.44

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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.