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Finding the Fourth Proportional to 19,815.20, 27,345.01 and 10,863.03

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Solution

The fourth proportional to 19,815.20, 27,345.01 and 10,863.03 is: 14,991.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.20 : 27,345.01 = 10,863.03 : x
  2. Step 2: Convert to fraction form
    19,815.20/27,345.01 = 10,863.03/x
  3. Step 3: Cross multiply
    19,815.20x = 27,345.01 × 10,863.03
  4. Step 4: Simplify right side
    19,815.20x = 297,049,663.98
  5. Step 5: Solve for x
    x = 297,049,663.98/19,815.20
  6. Step 6: Final answer
    x = 14,991.00

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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.