Home / 18,666.39-28,005.05-5,519.10

Finding the Fourth Proportional to 18,666.39, 28,005.05 and 5,519.10

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Solution

The fourth proportional to 18,666.39, 28,005.05 and 5,519.10 is: 8,280.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.39 : 28,005.05 = 5,519.10 : x
  2. Step 2: Convert to fraction form
    18,666.39/28,005.05 = 5,519.10/x
  3. Step 3: Cross multiply
    18,666.39x = 28,005.05 × 5,519.10
  4. Step 4: Simplify right side
    18,666.39x = 154,562,644.96
  5. Step 5: Solve for x
    x = 154,562,644.96/18,666.39
  6. Step 6: Final answer
    x = 8,280.27

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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.