Home / 21,671.23-29,893.42-13,699.62

Finding the Fourth Proportional to 21,671.23, 29,893.42 and 13,699.62

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Solution

The fourth proportional to 21,671.23, 29,893.42 and 13,699.62 is: 18,897.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.23 : 29,893.42 = 13,699.62 : x
  2. Step 2: Convert to fraction form
    21,671.23/29,893.42 = 13,699.62/x
  3. Step 3: Cross multiply
    21,671.23x = 29,893.42 × 13,699.62
  4. Step 4: Simplify right side
    21,671.23x = 409,528,494.50
  5. Step 5: Solve for x
    x = 409,528,494.50/21,671.23
  6. Step 6: Final answer
    x = 18,897.34

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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.