Home / 15,475.36-21,355.36-8,401.60

Finding the Fourth Proportional to 15,475.36, 21,355.36 and 8,401.60

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Solution

The fourth proportional to 15,475.36, 21,355.36 and 8,401.60 is: 11,593.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.36 : 21,355.36 = 8,401.60 : x
  2. Step 2: Convert to fraction form
    15,475.36/21,355.36 = 8,401.60/x
  3. Step 3: Cross multiply
    15,475.36x = 21,355.36 × 8,401.60
  4. Step 4: Simplify right side
    15,475.36x = 179,419,192.58
  5. Step 5: Solve for x
    x = 179,419,192.58/15,475.36
  6. Step 6: Final answer
    x = 11,593.86

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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.