Home / 21,259.28-29,338.34-11,699.42

Finding the Fourth Proportional to 21,259.28, 29,338.34 and 11,699.42

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Solution

The fourth proportional to 21,259.28, 29,338.34 and 11,699.42 is: 16,145.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.28 : 29,338.34 = 11,699.42 : x
  2. Step 2: Convert to fraction form
    21,259.28/29,338.34 = 11,699.42/x
  3. Step 3: Cross multiply
    21,259.28x = 29,338.34 × 11,699.42
  4. Step 4: Simplify right side
    21,259.28x = 343,241,356.57
  5. Step 5: Solve for x
    x = 343,241,356.57/21,259.28
  6. Step 6: Final answer
    x = 16,145.49

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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.