Home / 21,259.49-29,338.36-11,700.48

Finding the Fourth Proportional to 21,259.49, 29,338.36 and 11,700.48

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Solution

The fourth proportional to 21,259.49, 29,338.36 and 11,700.48 is: 16,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.49 : 29,338.36 = 11,700.48 : x
  2. Step 2: Convert to fraction form
    21,259.49/29,338.36 = 11,700.48/x
  3. Step 3: Cross multiply
    21,259.49x = 29,338.36 × 11,700.48
  4. Step 4: Simplify right side
    21,259.49x = 343,272,747.72
  5. Step 5: Solve for x
    x = 343,272,747.72/21,259.49
  6. Step 6: Final answer
    x = 16,146.80

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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.