Home / 21,270.72-29,354.76-11,839.08

Finding the Fourth Proportional to 21,270.72, 29,354.76 and 11,839.08

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Solution

The fourth proportional to 21,270.72, 29,354.76 and 11,839.08 is: 16,338.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.72 : 29,354.76 = 11,839.08 : x
  2. Step 2: Convert to fraction form
    21,270.72/29,354.76 = 11,839.08/x
  3. Step 3: Cross multiply
    21,270.72x = 29,354.76 × 11,839.08
  4. Step 4: Simplify right side
    21,270.72x = 347,533,352.02
  5. Step 5: Solve for x
    x = 347,533,352.02/21,270.72
  6. Step 6: Final answer
    x = 16,338.58

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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.