Home / 21,099.89-29,117.75-11,668.46

Finding the Fourth Proportional to 21,099.89, 29,117.75 and 11,668.46

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Solution

The fourth proportional to 21,099.89, 29,117.75 and 11,668.46 is: 16,102.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.89 : 29,117.75 = 11,668.46 : x
  2. Step 2: Convert to fraction form
    21,099.89/29,117.75 = 11,668.46/x
  3. Step 3: Cross multiply
    21,099.89x = 29,117.75 × 11,668.46
  4. Step 4: Simplify right side
    21,099.89x = 339,759,097.23
  5. Step 5: Solve for x
    x = 339,759,097.23/21,099.89
  6. Step 6: Final answer
    x = 16,102.41

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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.