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Finding the Fourth Proportional to 18,727.81, 28,095.90 and 7,041.13

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Solution

The fourth proportional to 18,727.81, 28,095.90 and 7,041.13 is: 10,563.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.81 : 28,095.90 = 7,041.13 : x
  2. Step 2: Convert to fraction form
    18,727.81/28,095.90 = 7,041.13/x
  3. Step 3: Cross multiply
    18,727.81x = 28,095.90 × 7,041.13
  4. Step 4: Simplify right side
    18,727.81x = 197,826,884.37
  5. Step 5: Solve for x
    x = 197,826,884.37/18,727.81
  6. Step 6: Final answer
    x = 10,563.27

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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.