Home / 12,750.72-19,126.04-3,985.64

Finding the Fourth Proportional to 12,750.72, 19,126.04 and 3,985.64

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Solution

The fourth proportional to 12,750.72, 19,126.04 and 3,985.64 is: 5,978.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.72 : 19,126.04 = 3,985.64 : x
  2. Step 2: Convert to fraction form
    12,750.72/19,126.04 = 3,985.64/x
  3. Step 3: Cross multiply
    12,750.72x = 19,126.04 × 3,985.64
  4. Step 4: Simplify right side
    12,750.72x = 76,229,510.07
  5. Step 5: Solve for x
    x = 76,229,510.07/12,750.72
  6. Step 6: Final answer
    x = 5,978.45

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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.