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Finding the Fourth Proportional to 15,022.43, 20,730.43 and 8,648.81

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Solution

The fourth proportional to 15,022.43, 20,730.43 and 8,648.81 is: 11,935.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,022.43 : 20,730.43 = 8,648.81 : x
  2. Step 2: Convert to fraction form
    15,022.43/20,730.43 = 8,648.81/x
  3. Step 3: Cross multiply
    15,022.43x = 20,730.43 × 8,648.81
  4. Step 4: Simplify right side
    15,022.43x = 179,293,550.29
  5. Step 5: Solve for x
    x = 179,293,550.29/15,022.43
  6. Step 6: Final answer
    x = 11,935.06

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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.