Home / 15,394.92-21,230.82-10,087.80

Finding the Fourth Proportional to 15,394.92, 21,230.82 and 10,087.80

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Solution

The fourth proportional to 15,394.92, 21,230.82 and 10,087.80 is: 13,911.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,394.92 : 21,230.82 = 10,087.80 : x
  2. Step 2: Convert to fraction form
    15,394.92/21,230.82 = 10,087.80/x
  3. Step 3: Cross multiply
    15,394.92x = 21,230.82 × 10,087.80
  4. Step 4: Simplify right side
    15,394.92x = 214,172,266.00
  5. Step 5: Solve for x
    x = 214,172,266.00/15,394.92
  6. Step 6: Final answer
    x = 13,911.88

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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.