Home / 21,070.83-29,077.98-11,639.40

Finding the Fourth Proportional to 21,070.83, 29,077.98 and 11,639.40

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Solution

The fourth proportional to 21,070.83, 29,077.98 and 11,639.40 is: 16,062.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.83 : 29,077.98 = 11,639.40 : x
  2. Step 2: Convert to fraction form
    21,070.83/29,077.98 = 11,639.40/x
  3. Step 3: Cross multiply
    21,070.83x = 29,077.98 × 11,639.40
  4. Step 4: Simplify right side
    21,070.83x = 338,450,087.72
  5. Step 5: Solve for x
    x = 338,450,087.72/21,070.83
  6. Step 6: Final answer
    x = 16,062.49

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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.