Home / 12,186.18-18,275.52-6,339.60

Finding the Fourth Proportional to 12,186.18, 18,275.52 and 6,339.60

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Solution

The fourth proportional to 12,186.18, 18,275.52 and 6,339.60 is: 9,507.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.18 : 18,275.52 = 6,339.60 : x
  2. Step 2: Convert to fraction form
    12,186.18/18,275.52 = 6,339.60/x
  3. Step 3: Cross multiply
    12,186.18x = 18,275.52 × 6,339.60
  4. Step 4: Simplify right side
    12,186.18x = 115,859,486.59
  5. Step 5: Solve for x
    x = 115,859,486.59/12,186.18
  6. Step 6: Final answer
    x = 9,507.45

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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.