Home / 19,991.05-29,986.68-8,304.28

Finding the Fourth Proportional to 19,991.05, 29,986.68 and 8,304.28

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Solution

The fourth proportional to 19,991.05, 29,986.68 and 8,304.28 is: 12,456.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,991.05 : 29,986.68 = 8,304.28 : x
  2. Step 2: Convert to fraction form
    19,991.05/29,986.68 = 8,304.28/x
  3. Step 3: Cross multiply
    19,991.05x = 29,986.68 × 8,304.28
  4. Step 4: Simplify right side
    19,991.05x = 249,017,743.16
  5. Step 5: Solve for x
    x = 249,017,743.16/19,991.05
  6. Step 6: Final answer
    x = 12,456.46

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1.5x scale

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.