Home / 11,165.48-15,405.08-6,919.67

Finding the Fourth Proportional to 11,165.48, 15,405.08 and 6,919.67

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Solution

The fourth proportional to 11,165.48, 15,405.08 and 6,919.67 is: 9,547.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,165.48 : 15,405.08 = 6,919.67 : x
  2. Step 2: Convert to fraction form
    11,165.48/15,405.08 = 6,919.67/x
  3. Step 3: Cross multiply
    11,165.48x = 15,405.08 × 6,919.67
  4. Step 4: Simplify right side
    11,165.48x = 106,597,958.30
  5. Step 5: Solve for x
    x = 106,597,958.30/11,165.48
  6. Step 6: Final answer
    x = 9,547.10

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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.