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Finding the Fourth Proportional to 19,980.27, 29,973.65 and 6,129.27

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Solution

The fourth proportional to 19,980.27, 29,973.65 and 6,129.27 is: 9,194.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.27 : 29,973.65 = 6,129.27 : x
  2. Step 2: Convert to fraction form
    19,980.27/29,973.65 = 6,129.27/x
  3. Step 3: Cross multiply
    19,980.27x = 29,973.65 × 6,129.27
  4. Step 4: Simplify right side
    19,980.27x = 183,716,563.09
  5. Step 5: Solve for x
    x = 183,716,563.09/19,980.27
  6. Step 6: Final answer
    x = 9,194.90

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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.