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Finding the Fourth Proportional to 19,174.71, 28,749.92 and 8,089.05

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Solution

The fourth proportional to 19,174.71, 28,749.92 and 8,089.05 is: 12,128.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,174.71 : 28,749.92 = 8,089.05 : x
  2. Step 2: Convert to fraction form
    19,174.71/28,749.92 = 8,089.05/x
  3. Step 3: Cross multiply
    19,174.71x = 28,749.92 × 8,089.05
  4. Step 4: Simplify right side
    19,174.71x = 232,559,499.93
  5. Step 5: Solve for x
    x = 232,559,499.93/19,174.71
  6. Step 6: Final answer
    x = 12,128.45

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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.