Home / 21,070.77-29,083.46-13,108.25

Finding the Fourth Proportional to 21,070.77, 29,083.46 and 13,108.25

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Solution

The fourth proportional to 21,070.77, 29,083.46 and 13,108.25 is: 18,092.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.77 : 29,083.46 = 13,108.25 : x
  2. Step 2: Convert to fraction form
    21,070.77/29,083.46 = 13,108.25/x
  3. Step 3: Cross multiply
    21,070.77x = 29,083.46 × 13,108.25
  4. Step 4: Simplify right side
    21,070.77x = 381,233,053.59
  5. Step 5: Solve for x
    x = 381,233,053.59/21,070.77
  6. Step 6: Final answer
    x = 18,092.98

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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.