Home / 21,019.35-29,005.82-11,459.03

Finding the Fourth Proportional to 21,019.35, 29,005.82 and 11,459.03

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Solution

The fourth proportional to 21,019.35, 29,005.82 and 11,459.03 is: 15,812.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.35 : 29,005.82 = 11,459.03 : x
  2. Step 2: Convert to fraction form
    21,019.35/29,005.82 = 11,459.03/x
  3. Step 3: Cross multiply
    21,019.35x = 29,005.82 × 11,459.03
  4. Step 4: Simplify right side
    21,019.35x = 332,378,561.55
  5. Step 5: Solve for x
    x = 332,378,561.55/21,019.35
  6. Step 6: Final answer
    x = 15,812.98

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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.