Home / 19,201.02-28,801.55-12,656.43

Finding the Fourth Proportional to 19,201.02, 28,801.55 and 12,656.43

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Solution

The fourth proportional to 19,201.02, 28,801.55 and 12,656.43 is: 18,984.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.02 : 28,801.55 = 12,656.43 : x
  2. Step 2: Convert to fraction form
    19,201.02/28,801.55 = 12,656.43/x
  3. Step 3: Cross multiply
    19,201.02x = 28,801.55 × 12,656.43
  4. Step 4: Simplify right side
    19,201.02x = 364,524,801.47
  5. Step 5: Solve for x
    x = 364,524,801.47/19,201.02
  6. Step 6: Final answer
    x = 18,984.66

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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.