Home / 11,520.60-15,898.44-6,485.10

Finding the Fourth Proportional to 11,520.60, 15,898.44 and 6,485.10

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Solution

The fourth proportional to 11,520.60, 15,898.44 and 6,485.10 is: 8,949.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.60 : 15,898.44 = 6,485.10 : x
  2. Step 2: Convert to fraction form
    11,520.60/15,898.44 = 6,485.10/x
  3. Step 3: Cross multiply
    11,520.60x = 15,898.44 × 6,485.10
  4. Step 4: Simplify right side
    11,520.60x = 103,102,973.24
  5. Step 5: Solve for x
    x = 103,102,973.24/11,520.60
  6. Step 6: Final answer
    x = 8,949.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.