Home / 11,921.63-17,881.65-4,899.83

Finding the Fourth Proportional to 11,921.63, 17,881.65 and 4,899.83

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Solution

The fourth proportional to 11,921.63, 17,881.65 and 4,899.83 is: 7,349.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.63 : 17,881.65 = 4,899.83 : x
  2. Step 2: Convert to fraction form
    11,921.63/17,881.65 = 4,899.83/x
  3. Step 3: Cross multiply
    11,921.63x = 17,881.65 × 4,899.83
  4. Step 4: Simplify right side
    11,921.63x = 87,616,955.71
  5. Step 5: Solve for x
    x = 87,616,955.71/11,921.63
  6. Step 6: Final answer
    x = 7,349.41

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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.