Home / 21,070.94-29,076.63-11,639.30

Finding the Fourth Proportional to 21,070.94, 29,076.63 and 11,639.30

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Solution

The fourth proportional to 21,070.94, 29,076.63 and 11,639.30 is: 16,061.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.94 : 29,076.63 = 11,639.30 : x
  2. Step 2: Convert to fraction form
    21,070.94/29,076.63 = 11,639.30/x
  3. Step 3: Cross multiply
    21,070.94x = 29,076.63 × 11,639.30
  4. Step 4: Simplify right side
    21,070.94x = 338,431,619.56
  5. Step 5: Solve for x
    x = 338,431,619.56/21,070.94
  6. Step 6: Final answer
    x = 16,061.53

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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.