Home / 9,143.20-13,743.60-8,970.40

Finding the Fourth Proportional to 9,143.20, 13,743.60 and 8,970.40

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Solution

The fourth proportional to 9,143.20, 13,743.60 and 8,970.40 is: 13,483.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,143.20 : 13,743.60 = 8,970.40 : x
  2. Step 2: Convert to fraction form
    9,143.20/13,743.60 = 8,970.40/x
  3. Step 3: Cross multiply
    9,143.20x = 13,743.60 × 8,970.40
  4. Step 4: Simplify right side
    9,143.20x = 123,285,589.44
  5. Step 5: Solve for x
    x = 123,285,589.44/9,143.20
  6. Step 6: Final answer
    x = 13,483.86

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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.