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Finding the Fourth Proportional to 18,727.76, 28,095.81 and 7,041.08

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Solution

The fourth proportional to 18,727.76, 28,095.81 and 7,041.08 is: 10,563.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.76 : 28,095.81 = 7,041.08 : x
  2. Step 2: Convert to fraction form
    18,727.76/28,095.81 = 7,041.08/x
  3. Step 3: Cross multiply
    18,727.76x = 28,095.81 × 7,041.08
  4. Step 4: Simplify right side
    18,727.76x = 197,824,705.40
  5. Step 5: Solve for x
    x = 197,824,705.40/18,727.76
  6. Step 6: Final answer
    x = 10,563.18

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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.