Home / 10,812.40-14,921.22-6,338.80

Finding the Fourth Proportional to 10,812.40, 14,921.22 and 6,338.80

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Solution

The fourth proportional to 10,812.40, 14,921.22 and 6,338.80 is: 8,747.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.40 : 14,921.22 = 6,338.80 : x
  2. Step 2: Convert to fraction form
    10,812.40/14,921.22 = 6,338.80/x
  3. Step 3: Cross multiply
    10,812.40x = 14,921.22 × 6,338.80
  4. Step 4: Simplify right side
    10,812.40x = 94,582,629.34
  5. Step 5: Solve for x
    x = 94,582,629.34/10,812.40
  6. Step 6: Final answer
    x = 8,747.61

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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.