Home / 15,362.45-21,202.20-8,649.38

Finding the Fourth Proportional to 15,362.45, 21,202.20 and 8,649.38

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Solution

The fourth proportional to 15,362.45, 21,202.20 and 8,649.38 is: 11,937.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,362.45 : 21,202.20 = 8,649.38 : x
  2. Step 2: Convert to fraction form
    15,362.45/21,202.20 = 8,649.38/x
  3. Step 3: Cross multiply
    15,362.45x = 21,202.20 × 8,649.38
  4. Step 4: Simplify right side
    15,362.45x = 183,385,778.63
  5. Step 5: Solve for x
    x = 183,385,778.63/15,362.45
  6. Step 6: Final answer
    x = 11,937.28

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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.