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Finding the Fourth Proportional to 12,899.01, 19,357.15 and 4,691.01

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Solution

The fourth proportional to 12,899.01, 19,357.15 and 4,691.01 is: 7,039.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.01 : 19,357.15 = 4,691.01 : x
  2. Step 2: Convert to fraction form
    12,899.01/19,357.15 = 4,691.01/x
  3. Step 3: Cross multiply
    12,899.01x = 19,357.15 × 4,691.01
  4. Step 4: Simplify right side
    12,899.01x = 90,804,560.77
  5. Step 5: Solve for x
    x = 90,804,560.77/12,899.01
  6. Step 6: Final answer
    x = 7,039.65

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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.