Home / 12,186.28-16,815.90-9,674.47

Finding the Fourth Proportional to 12,186.28, 16,815.90 and 9,674.47

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Solution

The fourth proportional to 12,186.28, 16,815.90 and 9,674.47 is: 13,349.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.28 : 16,815.90 = 9,674.47 : x
  2. Step 2: Convert to fraction form
    12,186.28/16,815.90 = 9,674.47/x
  3. Step 3: Cross multiply
    12,186.28x = 16,815.90 × 9,674.47
  4. Step 4: Simplify right side
    12,186.28x = 162,684,920.07
  5. Step 5: Solve for x
    x = 162,684,920.07/12,186.28
  6. Step 6: Final answer
    x = 13,349.84

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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.