Home / 21,271.96-29,354.28-11,711.64

Finding the Fourth Proportional to 21,271.96, 29,354.28 and 11,711.64

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Solution

The fourth proportional to 21,271.96, 29,354.28 and 11,711.64 is: 16,161.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.96 : 29,354.28 = 11,711.64 : x
  2. Step 2: Convert to fraction form
    21,271.96/29,354.28 = 11,711.64/x
  3. Step 3: Cross multiply
    21,271.96x = 29,354.28 × 11,711.64
  4. Step 4: Simplify right side
    21,271.96x = 343,786,759.82
  5. Step 5: Solve for x
    x = 343,786,759.82/21,271.96
  6. Step 6: Final answer
    x = 16,161.50

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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.