Home / 15,747.35-21,730.48-8,673.21

Finding the Fourth Proportional to 15,747.35, 21,730.48 and 8,673.21

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Solution

The fourth proportional to 15,747.35, 21,730.48 and 8,673.21 is: 11,968.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,747.35 : 21,730.48 = 8,673.21 : x
  2. Step 2: Convert to fraction form
    15,747.35/21,730.48 = 8,673.21/x
  3. Step 3: Cross multiply
    15,747.35x = 21,730.48 × 8,673.21
  4. Step 4: Simplify right side
    15,747.35x = 188,472,994.76
  5. Step 5: Solve for x
    x = 188,472,994.76/15,747.35
  6. Step 6: Final answer
    x = 11,968.56

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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.