Home / 19,918.93-29,880.22-5,127.89

Finding the Fourth Proportional to 19,918.93, 29,880.22 and 5,127.89

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Solution

The fourth proportional to 19,918.93, 29,880.22 and 5,127.89 is: 7,692.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.93 : 29,880.22 = 5,127.89 : x
  2. Step 2: Convert to fraction form
    19,918.93/29,880.22 = 5,127.89/x
  3. Step 3: Cross multiply
    19,918.93x = 29,880.22 × 5,127.89
  4. Step 4: Simplify right side
    19,918.93x = 153,222,543.22
  5. Step 5: Solve for x
    x = 153,222,543.22/19,918.93
  6. Step 6: Final answer
    x = 7,692.31

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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.