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Finding the Fourth Proportional to 19,009.74, 28,514.01 and 7,916.15

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Solution

The fourth proportional to 19,009.74, 28,514.01 and 7,916.15 is: 11,873.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,009.74 : 28,514.01 = 7,916.15 : x
  2. Step 2: Convert to fraction form
    19,009.74/28,514.01 = 7,916.15/x
  3. Step 3: Cross multiply
    19,009.74x = 28,514.01 × 7,916.15
  4. Step 4: Simplify right side
    19,009.74x = 225,721,057.48
  5. Step 5: Solve for x
    x = 225,721,057.48/19,009.74
  6. Step 6: Final answer
    x = 11,873.97

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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.