Home / 19,917.09-29,876.85-5,126.49

Finding the Fourth Proportional to 19,917.09, 29,876.85 and 5,126.49

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Solution

The fourth proportional to 19,917.09, 29,876.85 and 5,126.49 is: 7,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.09 : 29,876.85 = 5,126.49 : x
  2. Step 2: Convert to fraction form
    19,917.09/29,876.85 = 5,126.49/x
  3. Step 3: Cross multiply
    19,917.09x = 29,876.85 × 5,126.49
  4. Step 4: Simplify right side
    19,917.09x = 153,163,372.76
  5. Step 5: Solve for x
    x = 153,163,372.76/19,917.09
  6. Step 6: Final answer
    x = 7,690.05

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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.