Home / 12,365.20-18,531.60-8,898.40

Finding the Fourth Proportional to 12,365.20, 18,531.60 and 8,898.40

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Solution

The fourth proportional to 12,365.20, 18,531.60 and 8,898.40 is: 13,335.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,365.20 : 18,531.60 = 8,898.40 : x
  2. Step 2: Convert to fraction form
    12,365.20/18,531.60 = 8,898.40/x
  3. Step 3: Cross multiply
    12,365.20x = 18,531.60 × 8,898.40
  4. Step 4: Simplify right side
    12,365.20x = 164,901,589.44
  5. Step 5: Solve for x
    x = 164,901,589.44/12,365.20
  6. Step 6: Final answer
    x = 13,335.94

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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.