Home / 18,678.55-28,017.87-5,351.52

Finding the Fourth Proportional to 18,678.55, 28,017.87 and 5,351.52

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Solution

The fourth proportional to 18,678.55, 28,017.87 and 5,351.52 is: 8,027.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.55 : 28,017.87 = 5,351.52 : x
  2. Step 2: Convert to fraction form
    18,678.55/28,017.87 = 5,351.52/x
  3. Step 3: Cross multiply
    18,678.55x = 28,017.87 × 5,351.52
  4. Step 4: Simplify right side
    18,678.55x = 149,938,164.21
  5. Step 5: Solve for x
    x = 149,938,164.21/18,678.55
  6. Step 6: Final answer
    x = 8,027.29

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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.