Home / 21,699.22-29,945.16-12,747.10

Finding the Fourth Proportional to 21,699.22, 29,945.16 and 12,747.10

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Solution

The fourth proportional to 21,699.22, 29,945.16 and 12,747.10 is: 17,591.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,699.22 : 29,945.16 = 12,747.10 : x
  2. Step 2: Convert to fraction form
    21,699.22/29,945.16 = 12,747.10/x
  3. Step 3: Cross multiply
    21,699.22x = 29,945.16 × 12,747.10
  4. Step 4: Simplify right side
    21,699.22x = 381,713,792.32
  5. Step 5: Solve for x
    x = 381,713,792.32/21,699.22
  6. Step 6: Final answer
    x = 17,591.13

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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.