Home / 21,316.39-29,415.54-11,757.94

Finding the Fourth Proportional to 21,316.39, 29,415.54 and 11,757.94

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Solution

The fourth proportional to 21,316.39, 29,415.54 and 11,757.94 is: 16,225.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.39 : 29,415.54 = 11,757.94 : x
  2. Step 2: Convert to fraction form
    21,316.39/29,415.54 = 11,757.94/x
  3. Step 3: Cross multiply
    21,316.39x = 29,415.54 × 11,757.94
  4. Step 4: Simplify right side
    21,316.39x = 345,866,154.39
  5. Step 5: Solve for x
    x = 345,866,154.39/21,316.39
  6. Step 6: Final answer
    x = 16,225.36

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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.