Home / 13,669.24-18,865.56-8,363.20

Finding the Fourth Proportional to 13,669.24, 18,865.56 and 8,363.20

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Solution

The fourth proportional to 13,669.24, 18,865.56 and 8,363.20 is: 11,542.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.24 : 18,865.56 = 8,363.20 : x
  2. Step 2: Convert to fraction form
    13,669.24/18,865.56 = 8,363.20/x
  3. Step 3: Cross multiply
    13,669.24x = 18,865.56 × 8,363.20
  4. Step 4: Simplify right side
    13,669.24x = 157,776,451.39
  5. Step 5: Solve for x
    x = 157,776,451.39/13,669.24
  6. Step 6: Final answer
    x = 11,542.45

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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.