Home / 11,688.40-17,527.20-5,111.20

Finding the Fourth Proportional to 11,688.40, 17,527.20 and 5,111.20

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Solution

The fourth proportional to 11,688.40, 17,527.20 and 5,111.20 is: 7,664.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.40 : 17,527.20 = 5,111.20 : x
  2. Step 2: Convert to fraction form
    11,688.40/17,527.20 = 5,111.20/x
  3. Step 3: Cross multiply
    11,688.40x = 17,527.20 × 5,111.20
  4. Step 4: Simplify right side
    11,688.40x = 89,585,024.64
  5. Step 5: Solve for x
    x = 89,585,024.64/11,688.40
  6. Step 6: Final answer
    x = 7,664.44

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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.