Home / 11,355.81-15,672.68-6,818.80

Finding the Fourth Proportional to 11,355.81, 15,672.68 and 6,818.80

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Solution

The fourth proportional to 11,355.81, 15,672.68 and 6,818.80 is: 9,410.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.81 : 15,672.68 = 6,818.80 : x
  2. Step 2: Convert to fraction form
    11,355.81/15,672.68 = 6,818.80/x
  3. Step 3: Cross multiply
    11,355.81x = 15,672.68 × 6,818.80
  4. Step 4: Simplify right side
    11,355.81x = 106,868,870.38
  5. Step 5: Solve for x
    x = 106,868,870.38/11,355.81
  6. Step 6: Final answer
    x = 9,410.94

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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.