Home / 21,133.34-29,163.66-11,701.70

Finding the Fourth Proportional to 21,133.34, 29,163.66 and 11,701.70

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Solution

The fourth proportional to 21,133.34, 29,163.66 and 11,701.70 is: 16,148.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.34 : 29,163.66 = 11,701.70 : x
  2. Step 2: Convert to fraction form
    21,133.34/29,163.66 = 11,701.70/x
  3. Step 3: Cross multiply
    21,133.34x = 29,163.66 × 11,701.70
  4. Step 4: Simplify right side
    21,133.34x = 341,264,429.25
  5. Step 5: Solve for x
    x = 341,264,429.25/21,133.34
  6. Step 6: Final answer
    x = 16,148.15

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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.