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Finding the Fourth Proportional to 11,547.68, 17,328 and 4,622.72

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Solution

The fourth proportional to 11,547.68, 17,328 and 4,622.72 is: 6,936.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,547.68 : 17,328 = 4,622.72 : x
  2. Step 2: Convert to fraction form
    11,547.68/17,328 = 4,622.72/x
  3. Step 3: Cross multiply
    11,547.68x = 17,328 × 4,622.72
  4. Step 4: Simplify right side
    11,547.68x = 80,102,492.16
  5. Step 5: Solve for x
    x = 80,102,492.16/11,547.68
  6. Step 6: Final answer
    x = 6,936.67

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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.