Home / 10,812.40-16,218.39-4,243.18

Finding the Fourth Proportional to 10,812.40, 16,218.39 and 4,243.18

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Solution

The fourth proportional to 10,812.40, 16,218.39 and 4,243.18 is: 6,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.40 : 16,218.39 = 4,243.18 : x
  2. Step 2: Convert to fraction form
    10,812.40/16,218.39 = 4,243.18/x
  3. Step 3: Cross multiply
    10,812.40x = 16,218.39 × 4,243.18
  4. Step 4: Simplify right side
    10,812.40x = 68,817,548.08
  5. Step 5: Solve for x
    x = 68,817,548.08/10,812.40
  6. Step 6: Final answer
    x = 6,364.69

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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.