Home / 11,651.02-16,078.74-6,615.40

Finding the Fourth Proportional to 11,651.02, 16,078.74 and 6,615.40

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Solution

The fourth proportional to 11,651.02, 16,078.74 and 6,615.40 is: 9,129.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,651.02 : 16,078.74 = 6,615.40 : x
  2. Step 2: Convert to fraction form
    11,651.02/16,078.74 = 6,615.40/x
  3. Step 3: Cross multiply
    11,651.02x = 16,078.74 × 6,615.40
  4. Step 4: Simplify right side
    11,651.02x = 106,367,296.60
  5. Step 5: Solve for x
    x = 106,367,296.60/11,651.02
  6. Step 6: Final answer
    x = 9,129.44

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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.