Home / 15,747.21-21,730.35-8,673.48

Finding the Fourth Proportional to 15,747.21, 21,730.35 and 8,673.48

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Solution

The fourth proportional to 15,747.21, 21,730.35 and 8,673.48 is: 11,968.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,747.21 : 21,730.35 = 8,673.48 : x
  2. Step 2: Convert to fraction form
    15,747.21/21,730.35 = 8,673.48/x
  3. Step 3: Cross multiply
    15,747.21x = 21,730.35 × 8,673.48
  4. Step 4: Simplify right side
    15,747.21x = 188,477,756.12
  5. Step 5: Solve for x
    x = 188,477,756.12/15,747.21
  6. Step 6: Final answer
    x = 11,968.96

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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.