Home / 21,070.56-29,076.96-11,639.04

Finding the Fourth Proportional to 21,070.56, 29,076.96 and 11,639.04

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Solution

The fourth proportional to 21,070.56, 29,076.96 and 11,639.04 is: 16,061.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.56 : 29,076.96 = 11,639.04 : x
  2. Step 2: Convert to fraction form
    21,070.56/29,076.96 = 11,639.04/x
  3. Step 3: Cross multiply
    21,070.56x = 29,076.96 × 11,639.04
  4. Step 4: Simplify right side
    21,070.56x = 338,427,900.52
  5. Step 5: Solve for x
    x = 338,427,900.52/21,070.56
  6. Step 6: Final answer
    x = 16,061.65

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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.