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Finding the Fourth Proportional to 18,984.71, 28,477.10 and 6,504.84

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Solution

The fourth proportional to 18,984.71, 28,477.10 and 6,504.84 is: 9,757.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,984.71 : 28,477.10 = 6,504.84 : x
  2. Step 2: Convert to fraction form
    18,984.71/28,477.10 = 6,504.84/x
  3. Step 3: Cross multiply
    18,984.71x = 28,477.10 × 6,504.84
  4. Step 4: Simplify right side
    18,984.71x = 185,238,979.16
  5. Step 5: Solve for x
    x = 185,238,979.16/18,984.71
  6. Step 6: Final answer
    x = 9,757.27

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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.