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Finding the Fourth Proportional to 14,357.87, 19,812.44 and 8,979.27

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Solution

The fourth proportional to 14,357.87, 19,812.44 and 8,979.27 is: 12,390.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,357.87 : 19,812.44 = 8,979.27 : x
  2. Step 2: Convert to fraction form
    14,357.87/19,812.44 = 8,979.27/x
  3. Step 3: Cross multiply
    14,357.87x = 19,812.44 × 8,979.27
  4. Step 4: Simplify right side
    14,357.87x = 177,901,248.12
  5. Step 5: Solve for x
    x = 177,901,248.12/14,357.87
  6. Step 6: Final answer
    x = 12,390.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.