Home / 11,988.10-17,981.70-4,966.31

Finding the Fourth Proportional to 11,988.10, 17,981.70 and 4,966.31

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Solution

The fourth proportional to 11,988.10, 17,981.70 and 4,966.31 is: 7,449.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.10 : 17,981.70 = 4,966.31 : x
  2. Step 2: Convert to fraction form
    11,988.10/17,981.70 = 4,966.31/x
  3. Step 3: Cross multiply
    11,988.10x = 17,981.70 × 4,966.31
  4. Step 4: Simplify right side
    11,988.10x = 89,302,722.86
  5. Step 5: Solve for x
    x = 89,302,722.86/11,988.10
  6. Step 6: Final answer
    x = 7,449.28

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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.