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Finding the Fourth Proportional to 18,989.99, 28,482.94 and 6,507.69

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Solution

The fourth proportional to 18,989.99, 28,482.94 and 6,507.69 is: 9,760.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.99 : 28,482.94 = 6,507.69 : x
  2. Step 2: Convert to fraction form
    18,989.99/28,482.94 = 6,507.69/x
  3. Step 3: Cross multiply
    18,989.99x = 28,482.94 × 6,507.69
  4. Step 4: Simplify right side
    18,989.99x = 185,358,205.35
  5. Step 5: Solve for x
    x = 185,358,205.35/18,989.99
  6. Step 6: Final answer
    x = 9,760.84

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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.