Home / 12,686.02-19,026-4,789.30

Finding the Fourth Proportional to 12,686.02, 19,026 and 4,789.30

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Solution

The fourth proportional to 12,686.02, 19,026 and 4,789.30 is: 7,182.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686.02 : 19,026 = 4,789.30 : x
  2. Step 2: Convert to fraction form
    12,686.02/19,026 = 4,789.30/x
  3. Step 3: Cross multiply
    12,686.02x = 19,026 × 4,789.30
  4. Step 4: Simplify right side
    12,686.02x = 91,121,221.80
  5. Step 5: Solve for x
    x = 91,121,221.80/12,686.02
  6. Step 6: Final answer
    x = 7,182.81

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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.