Home / 18,784.52-28,177.44-8,918.72

Finding the Fourth Proportional to 18,784.52, 28,177.44 and 8,918.72

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Solution

The fourth proportional to 18,784.52, 28,177.44 and 8,918.72 is: 13,378.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,784.52 : 28,177.44 = 8,918.72 : x
  2. Step 2: Convert to fraction form
    18,784.52/28,177.44 = 8,918.72/x
  3. Step 3: Cross multiply
    18,784.52x = 28,177.44 × 8,918.72
  4. Step 4: Simplify right side
    18,784.52x = 251,306,697.68
  5. Step 5: Solve for x
    x = 251,306,697.68/18,784.52
  6. Step 6: Final answer
    x = 13,378.39

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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.