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Finding the Fourth Proportional to 18,797.32, 28,030.10 and 18,628.60

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Solution

The fourth proportional to 18,797.32, 28,030.10 and 18,628.60 is: 27,778.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,797.32 : 28,030.10 = 18,628.60 : x
  2. Step 2: Convert to fraction form
    18,797.32/28,030.10 = 18,628.60/x
  3. Step 3: Cross multiply
    18,797.32x = 28,030.10 × 18,628.60
  4. Step 4: Simplify right side
    18,797.32x = 522,161,380.71
  5. Step 5: Solve for x
    x = 522,161,380.71/18,797.32
  6. Step 6: Final answer
    x = 27,778.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.